<div class='seriesDetails'> <section> <img alt='cover image' title='Mr. Keen, Tracer of Lost Persons' src='/cover/sm/mr-keen-tracer-of-lost-persons.jpg'> <div> <ul> <li>Detective</li> </ul> <label>Mr. Keen, Tracer of Lost Persons</label> <aside> <span>55 episodes</span> <span>Aired 1940-1955</span> </aside> </div> </section> <ol><li class='episode' title='The Case Of The Woman Who Wasn't Needed' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1940-06-05.mp3'> <label>The Case Of The Woman Who Wasn't Needed</label> <aside> <span>12mins</span> <span>Aired 1940-06-05</span> </aside> </li><li class='episode' title='The Case Of The Moonless Night' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-01-06.mp3'> <label>The Case Of The Moonless Night</label> <aside> <span>30mins</span> <span>Aired 1944-01-06</span> </aside> </li><li class='episode' title='The Case Of The Missing Witness' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-01-13.mp3'> <label>The Case Of The Missing Witness</label> <aside> <span>30mins</span> <span>Aired 1944-01-13</span> </aside> </li><li class='episode' title='The Case Of The Girl Who Sang Too Well' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-01-20.mp3'> <label>The Case Of The Girl Who Sang Too Well</label> <aside> <span>29mins</span> <span>Aired 1944-01-20</span> </aside> </li><li class='episode' title='The Case Of The Girl Who Flirted' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-02-03.mp3'> <label>The Case Of The Girl Who Flirted</label> <aside> <span>30mins</span> <span>Aired 1944-02-03</span> </aside> </li><li class='episode' title='The Case Of The Boy Who Used Big Words' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-02-10.mp3'> <label>The Case Of The Boy Who Used Big Words</label> <aside> <span>29mins</span> <span>Aired 1944-02-10</span> </aside> </li><li class='episode' title='The Case Of Mr Trevor's Secret' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-02-17.mp3'> <label>The Case Of Mr Trevor's Secret</label> <aside> <span>30mins</span> <span>Aired 1944-02-17</span> </aside> </li><li class='episode' title='The Case Of Murder In The Air' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-02-24.mp3'> <label>The Case Of Murder In The Air</label> <aside> <span>30mins</span> <span>Aired 1944-02-24</span> </aside> </li><li class='episode' title='The Case Of The Strange Display' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-03-16.mp3'> <label>The Case Of The Strange Display</label> <aside> <span>29mins</span> <span>Aired 1944-03-16</span> </aside> </li><li class='episode' title='The Case Of The Leaping Dog' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-04-13.mp3'> <label>The Case Of The Leaping Dog</label> <aside> <span>30mins</span> <span>Aired 1944-04-13</span> </aside> </li><li class='episode' title='The Case Of The Woman In Blue' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-06-15.mp3'> <label>The Case Of The Woman In Blue</label> <aside> <span>30mins</span> <span>Aired 1944-06-15</span> </aside> </li><li class='episode' title='The Case Of The Frightened Child' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-11-16.mp3'> <label>The Case Of The Frightened Child</label> <aside> <span>30mins</span> <span>Aired 1944-11-16</span> </aside> </li><li class='episode' title='The Nightmare Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1944-12-14.mp3'> <label>The Nightmare Murder Case</label> <aside> <span>30mins</span> <span>Aired 1944-12-14</span> </aside> </li><li class='episode' title='The Case Of The Absent Minded Professor' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1945-03-15.mp3'> <label>The Case Of The Absent Minded Professor</label> <aside> <span>29mins</span> <span>Aired 1945-03-15</span> </aside> </li><li class='episode' title='The Case Of The Glamorous Widow' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1946-05-23.mp3'> <label>The Case Of The Glamorous Widow</label> <aside> <span>30mins</span> <span>Aired 1946-05-23</span> </aside> </li><li class='episode' title='Identical Twins Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1948-10-28.mp3'> <label>Identical Twins Murder Case</label> <aside> <span>16mins</span> <span>Aired 1948-10-28</span> </aside> </li><li class='episode' title='The Case Of Murder and The Star Of Death' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1949-06-09.mp3'> <label>The Case Of Murder and The Star Of Death</label> <aside> <span>28mins</span> <span>Aired 1949-06-09</span> </aside> </li><li class='episode' title='The Case Of Murder and The Bloodstained Necklace' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1949-09-15.mp3'> <label>The Case Of Murder and The Bloodstained Necklace</label> <aside> <span>28mins</span> <span>Aired 1949-09-15</span> </aside> </li><li class='episode' title='The Yellow Talon Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1949-09-22.mp3'> <label>The Yellow Talon Murder Case</label> <aside> <span>30mins</span> <span>Aired 1949-09-22</span> </aside> </li><li class='episode' title='The Case Of Murder With A Thousand Witnesses' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1949-09-29.mp3'> <label>The Case Of Murder With A Thousand Witnesses</label> <aside> <span>29mins</span> <span>Aired 1949-09-29</span> </aside> </li><li class='episode' title='The Case Of The Man Who Invented Death' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1949-10-06.mp3'> <label>The Case Of The Man Who Invented Death</label> <aside> <span>29mins</span> <span>Aired 1949-10-06</span> </aside> </li><li class='episode' title='The Silver Dagger Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1949-10-13.mp3'> <label>The Silver Dagger Murder Case</label> <aside> <span>29mins</span> <span>Aired 1949-10-13</span> </aside> </li><li class='episode' title='The Case Of The Ruthless Murderers' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1949-10-27.mp3'> <label>The Case Of The Ruthless Murderers</label> <aside> <span>28mins</span> <span>Aired 1949-10-27</span> </aside> </li><li class='episode' title='The Forgotten Cave Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1949-11-03.mp3'> <label>The Forgotten Cave Murder Case</label> <aside> <span>29mins</span> <span>Aired 1949-11-03</span> </aside> </li><li class='episode' title='The Engaged Girl Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1949-11-10.mp3'> <label>The Engaged Girl Murder Case</label> <aside> <span>29mins</span> <span>Aired 1949-11-10</span> </aside> </li><li class='episode' title='The Case Of The Rushville Murder' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-01-05.mp3'> <label>The Case Of The Rushville Murder</label> <aside> <span>29mins</span> <span>Aired 1950-01-05</span> </aside> </li><li class='episode' title='The Bride and Groom Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-01-19.mp3'> <label>The Bride and Groom Murder Case</label> <aside> <span>25mins</span> <span>Aired 1950-01-19</span> </aside> </li><li class='episode' title='The Telephone Book Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-01-26.mp3'> <label>The Telephone Book Murder Case</label> <aside> <span>29mins</span> <span>Aired 1950-01-26</span> </aside> </li><li class='episode' title='The Case Of Murder and The Jewel Thief' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-02-09.mp3'> <label>The Case Of Murder and The Jewel Thief</label> <aside> <span>28mins</span> <span>Aired 1950-02-09</span> </aside> </li><li class='episode' title='The Case Of The Two Faced Murderer' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-02-16.mp3'> <label>The Case Of The Two Faced Murderer</label> <aside> <span>29mins</span> <span>Aired 1950-02-16</span> </aside> </li><li class='episode' title='The Case Of The Melody Of Murder' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-03-09.mp3'> <label>The Case Of The Melody Of Murder</label> <aside> <span>29mins</span> <span>Aired 1950-03-09</span> </aside> </li><li class='episode' title='The Innocent Flirtation Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-03-16.mp3'> <label>The Innocent Flirtation Murder Case</label> <aside> <span>28mins</span> <span>Aired 1950-03-16</span> </aside> </li><li class='episode' title='The Case Of The Murdered Detective' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-04-06.mp3'> <label>The Case Of The Murdered Detective</label> <aside> <span>29mins</span> <span>Aired 1950-04-06</span> </aside> </li><li class='episode' title='The Eccentric Millionaire Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-04-13.mp3'> <label>The Eccentric Millionaire Murder Case</label> <aside> <span>24mins</span> <span>Aired 1950-04-13</span> </aside> </li><li class='episode' title='The Country Club Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-04-20.mp3'> <label>The Country Club Murder Case</label> <aside> <span>29mins</span> <span>Aired 1950-04-20</span> </aside> </li><li class='episode' title='The Case Of The Woman Who Married A Murderer' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-04-27.mp3'> <label>The Case Of The Woman Who Married A Murderer</label> <aside> <span>24mins</span> <span>Aired 1950-04-27</span> </aside> </li><li class='episode' title='The King Cobra Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-05-04.mp3'> <label>The King Cobra Murder Case</label> <aside> <span>28mins</span> <span>Aired 1950-05-04</span> </aside> </li><li class='episode' title='The Case Of Murder and The Missing Car' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-05-11.mp3'> <label>The Case Of Murder and The Missing Car</label> <aside> <span>29mins</span> <span>Aired 1950-05-11</span> </aside> </li><li class='episode' title='The Broken Window Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-05-25.mp3'> <label>The Broken Window Murder Case</label> <aside> <span>29mins</span> <span>Aired 1950-05-25</span> </aside> </li><li class='episode' title='The Quicksand Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-06-01.mp3'> <label>The Quicksand Murder Case</label> <aside> <span>29mins</span> <span>Aired 1950-06-01</span> </aside> </li><li class='episode' title='The Skull and Crossbones Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1950-06-15.mp3'> <label>The Skull and Crossbones Murder Case</label> <aside> <span>29mins</span> <span>Aired 1950-06-15</span> </aside> </li><li class='episode' title='The Case Of Murder and The Strange Woman' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1951-07-20.mp3'> <label>The Case Of Murder and The Strange Woman</label> <aside> <span>29mins</span> <span>Aired 1951-07-20</span> </aside> </li><li class='episode' title='The Photograph Album Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1951-07-27.mp3'> <label>The Photograph Album Murder Case</label> <aside> <span>29mins</span> <span>Aired 1951-07-27</span> </aside> </li><li class='episode' title='The Case Of The Strange Murder Of Carrie Ellis' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1951-08-03.mp3'> <label>The Case Of The Strange Murder Of Carrie Ellis</label> <aside> <span>29mins</span> <span>Aired 1951-08-03</span> </aside> </li><li class='episode' title='The Abandoned Well Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1951-08-10.mp3'> <label>The Abandoned Well Murder Case</label> <aside> <span>28mins</span> <span>Aired 1951-08-10</span> </aside> </li><li class='episode' title='The Poisoned Sandwich Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1951-08-17.mp3'> <label>The Poisoned Sandwich Murder Case</label> <aside> <span>30mins</span> <span>Aired 1951-08-17</span> </aside> </li><li class='episode' title='The Case Of Murder At A Mile A Minute' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1951-12-06.mp3'> <label>The Case Of Murder At A Mile A Minute</label> <aside> <span>29mins</span> <span>Aired 1951-12-06</span> </aside> </li><li class='episode' title='The Silver Candlestick Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1952-03-13.mp3'> <label>The Silver Candlestick Murder Case</label> <aside> <span>29mins</span> <span>Aired 1952-03-13</span> </aside> </li><li class='episode' title='The Rented Cottage Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1952-04-03.mp3'> <label>The Rented Cottage Murder Case</label> <aside> <span>28mins</span> <span>Aired 1952-04-03</span> </aside> </li><li class='episode' title='The Mother's Plea Murder Case' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1952-04-10.mp3'> <label>The Mother's Plea Murder Case</label> <aside> <span>29mins</span> <span>Aired 1952-04-10</span> </aside> </li><li class='episode' title='The Shrieking Prisoner Murder Case Part 1' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1954-06-21.mp3'> <label>The Shrieking Prisoner Murder Case Part 1</label> <aside> <span>15mins</span> <span>Aired 1954-06-21</span> </aside> </li><li class='episode' title='The Shrieking Prisoner Murder Case Part 2' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1954-06-23.mp3'> <label>The Shrieking Prisoner Murder Case Part 2</label> <aside> <span>15mins</span> <span>Aired 1954-06-23</span> </aside> </li><li class='episode' title='The Shrieking Prisoner Murder Case Part 3' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1954-06-24.mp3'> <label>The Shrieking Prisoner Murder Case Part 3</label> <aside> <span>15mins</span> <span>Aired 1954-06-24</span> </aside> </li><li class='episode' title='The Shrieking Prisoner Murder Case Part 4' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1954-06-25.mp3'> <label>The Shrieking Prisoner Murder Case Part 4</label> <aside> <span>15mins</span> <span>Aired 1954-06-25</span> </aside> </li><li class='episode' title='The Case Of Murder and The Revengeful Ghost' data-cover='/cover/sm/mr-keen-tracer-of-lost-persons.jpg' data-series='Mr. Keen, Tracer of Lost Persons' data-file='otr/mr-keen-tracer-of-lost-persons/1955-02-22.mp3'> <label>The Case Of Murder and The Revengeful Ghost</label> <aside> <span>26mins</span> <span>Aired 1955-02-22</span> </aside> </li></ol></div>