1. Mr. Keen, Tracer of Lost Persons 1949 The Case of Murder with a Thousand Witnesses

    Mr. Keen, Tracer of Lost Persons 1949 The Case of Murder with a Thousand Witnesses

    37
  2. Mr. Keen, Tracer of Lost Persons 1949 The Case of Murder and the Star of Death

    Mr. Keen, Tracer of Lost Persons 1949 The Case of Murder and the Star of Death

    38
  3. Mr. Keen, Tracer of Lost Persons 1946-The Case of the Glamorous Widow

    Mr. Keen, Tracer of Lost Persons 1946-The Case of the Glamorous Widow

    33
  4. Mr. Keen, Tracer of Lost Persons 1945-The Case of the Absent Minded Professor

    Mr. Keen, Tracer of Lost Persons 1945-The Case of the Absent Minded Professor

    31
  5. Mr. Keen, Tracer of Lost Persons 1945-The Strange Case of Charley Lorimer

    Mr. Keen, Tracer of Lost Persons 1945-The Strange Case of Charley Lorimer

    36
  6. Mr. Keen, Tracer of Lost Persons 1949 The Yellow Talon Murder Case

    Mr. Keen, Tracer of Lost Persons 1949 The Yellow Talon Murder Case

    54
  7. Mr. Keen, Tracer of Lost Persons 1949 The Engaged Girl Murder Case

    Mr. Keen, Tracer of Lost Persons 1949 The Engaged Girl Murder Case

    42
  8. Mr. Keen, Tracer of Lost Persons 1950 The Bride and Groom Murder Case

    Mr. Keen, Tracer of Lost Persons 1950 The Bride and Groom Murder Case

    40
  9. Mr. Keen, Tracer of Lost Persons 1950 The Case of the Rushville Murder

    Mr. Keen, Tracer of Lost Persons 1950 The Case of the Rushville Murder

    39
  10. Mr. Keen, Tracer of Lost Persons 1950 The Case of the Two-Faced Murderer

    Mr. Keen, Tracer of Lost Persons 1950 The Case of the Two-Faced Murderer

    11
  11. Mr. Keen, Tracer of Lost Persons 1944-The Nightmare Murder Case

    Mr. Keen, Tracer of Lost Persons 1944-The Nightmare Murder Case

    19
  12. Mr. Keen, Tracer of Lost Persons 1944-The Case of the Woman in Blue

    Mr. Keen, Tracer of Lost Persons 1944-The Case of the Woman in Blue

    28
  13. Mr. Keen, Tracer of Lost Persons 1944-The Case of the Strange Display

    Mr. Keen, Tracer of Lost Persons 1944-The Case of the Strange Display

    16
  14. Mr. Keen, Tracer of Lost Persons 1944-The Case of the Missing Witness

    Mr. Keen, Tracer of Lost Persons 1944-The Case of the Missing Witness

    30
  15. Mr. Keen, Tracer of Lost Persons 1944-The Case of the Moonless Night

    Mr. Keen, Tracer of Lost Persons 1944-The Case of the Moonless Night

    32
  16. Mr. Keen, Tracer of Lost Persons 1944-The Case of the Girl Who Sang Too Well

    Mr. Keen, Tracer of Lost Persons 1944-The Case of the Girl Who Sang Too Well

    2
    0
    33
  17. Mr. Keen, Tracer of Lost Persons 1944-The Case of the Frightened Child

    Mr. Keen, Tracer of Lost Persons 1944-The Case of the Frightened Child

    37
  18. Mr. Keen, Tracer of Lost Persons 1944-The Case of Mr. Trevor's Secret

    Mr. Keen, Tracer of Lost Persons 1944-The Case of Mr. Trevor's Secret

    19
  19. Mr. Keen, Tracer of Lost Persons 1944-The Case of Murder in the Air

    Mr. Keen, Tracer of Lost Persons 1944-The Case of Murder in the Air

    2
    0
    29
  20. Mr. Keen, Tracer of Lost Persons 1944-The Case of the Boy Who Used Big Words

    Mr. Keen, Tracer of Lost Persons 1944-The Case of the Boy Who Used Big Words

    2
    0
    35
  21. Mr. Keen, Tracer of Lost Persons 1950 The Country Club Murder Case

    Mr. Keen, Tracer of Lost Persons 1950 The Country Club Murder Case

    10
  22. Mr. Keen, Tracer of Lost Persons 1950 The Broken Window Murder Case

    Mr. Keen, Tracer of Lost Persons 1950 The Broken Window Murder Case

    34
  23. Mr. Keen, Tracer of Lost Persons 1950 The Case of the Woman Who Married a Murderer

    Mr. Keen, Tracer of Lost Persons 1950 The Case of the Woman Who Married a Murderer

    10
  24. Mr. Keen, Tracer of Lost Persons 1950 The Eccentric Millionaire Murder Case

    Mr. Keen, Tracer of Lost Persons 1950 The Eccentric Millionaire Murder Case

    26
  25. Mr. Keen, Tracer of Lost Persons 1951 The Case of Murder and the Strange Woman

    Mr. Keen, Tracer of Lost Persons 1951 The Case of Murder and the Strange Woman

    23