1. 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
    38
  2. Mr. Keen, Tracer of Lost Persons 1950 The Case of Murder and the Jewel Thief

    Mr. Keen, Tracer of Lost Persons 1950 The Case of Murder and the Jewel Thief

    63
  3. Mr. Keen, Tracer of Lost Persons 1950 The Innocent Flirtation Murder Case

    Mr. Keen, Tracer of Lost Persons 1950 The Innocent Flirtation Murder Case

    44
  4. Mr. Keen, Tracer of Lost Persons 1952 The Case of Murder and the Prize-Winning Bull

    Mr. Keen, Tracer of Lost Persons 1952 The Case of Murder and the Prize-Winning Bull

    54
    1
  5. Mr. Keen, Tracer of Lost Persons 1950 The Broken Window Murder Case

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

    39
  6. Mr. Keen, Tracer of Lost Persons 1950 The King Cobra Murder Case

    Mr. Keen, Tracer of Lost Persons 1950 The King Cobra Murder Case

    44
    1
  7. Mr. Keen, Tracer of Lost Persons 1944-The Nightmare Murder Case

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

    22
  8. 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

    27
  9. Mr. Keen, Tracer of Lost Persons 1951 The Abandoned Well Murder Case

    Mr. Keen, Tracer of Lost Persons 1951 The Abandoned Well Murder Case

    24
  10. Mr. Keen, Tracer of Lost Persons 1950 The Skull and Crossbones Murder Case

    Mr. Keen, Tracer of Lost Persons 1950 The Skull and Crossbones Murder Case

    31
  11. Mr. Keen, Tracer of Lost Persons 1950 The Eccentric Millionaire Murder Case

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

    31
  12. Mr. Keen, Tracer of Lost Persons 1955 The Case of Murder and the Revengeful Ghost (Final)

    Mr. Keen, Tracer of Lost Persons 1955 The Case of Murder and the Revengeful Ghost (Final)

    51
  13. Mr. Keen, Tracer of Lost Persons 1952 The Rented Cottage Murder Case

    Mr. Keen, Tracer of Lost Persons 1952 The Rented Cottage Murder Case

    43
  14. Mr. Keen, Tracer of Lost Persons 1952 The Gossip Column Murder Case

    Mr. Keen, Tracer of Lost Persons 1952 The Gossip Column Murder Case

    44
  15. Mr. Keen, Tracer of Lost Persons 1950 The Country Club Murder Case

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

    16
  16. Mr. Keen, Tracer of Lost Persons 1951 The Case of Murder at a Mile a Minute

    Mr. Keen, Tracer of Lost Persons 1951 The Case of Murder at a Mile a Minute

    20
  17. Mr. Keen, Tracer of Lost Persons 1950 The Telephone Book Murder Case

    Mr. Keen, Tracer of Lost Persons 1950 The Telephone Book Murder Case

    24
  18. Mr. Keen, Tracer of Lost Persons 1951 The Airport Murder Case

    Mr. Keen, Tracer of Lost Persons 1951 The Airport Murder Case

    25
  19. Mr. Keen, Tracer of Lost Persons 1950 The Quicksand Murder Case

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

    22
  20. Mr. Keen, Tracer of Lost Persons 1954 The Shrieking Prisoner Murder Case

    Mr. Keen, Tracer of Lost Persons 1954 The Shrieking Prisoner Murder Case

    41
  21. Mr. Keen, Tracer of Lost Persons 1952 The Silver Candlestick Murder Case

    Mr. Keen, Tracer of Lost Persons 1952 The Silver Candlestick Murder Case

    38
  22. Mr. Keen, Tracer of Lost Persons 1952 The Mother's Plea Murder Case

    Mr. Keen, Tracer of Lost Persons 1952 The Mother's Plea Murder Case

    38
  23. Mr. Keen, Tracer of Lost Persons 1951 The Poisoned Sandwich Murder Case

    Mr. Keen, Tracer of Lost Persons 1951 The Poisoned Sandwich Murder Case

    44
  24. Mr. Keen, Tracer of Lost Persons 1951 The Strange Murder of Carrie Ellis

    Mr. Keen, Tracer of Lost Persons 1951 The Strange Murder of Carrie Ellis

    50
  25. Mr. Keen, Tracer of Lost Persons 1951 The Photograph Album Murder Case

    Mr. Keen, Tracer of Lost Persons 1951 The Photograph Album Murder Case

    39