The Unknown
Plot: "The Unknown" was the final entry in Columbia’s I Love A Mystery series. A woman hires two detectives to keep her alive long enough to claim her inheritance
Karen Morley. Karen Morley was 36 in The Unknown as 'Rachel Martin'.
Jim Bannon. Jim Bannon was 35 in The Unknown as 'Jack Packard'.
Jeff Donnell. Jeff Donnell was 24 in The Unknown as 'Nina Arnold'.
Mark Roberts. Mark Roberts was 25 in The Unknown as 'Reed Cawthorne (as Robert Scott)'.
Robert Wilcox. Robert Wilcox was 36 in The Unknown as 'Richard Arnold'.
Barton Yarborough. Barton Yarborough was 45 in The Unknown as 'Doc Long'.
James Bell. James Bell was 54 in The Unknown as 'Edward Martin'.
Wilton Graff. Wilton Graff was 42 in The Unknown as 'Ralph Martin'.
Helen Freeman. Helen Freeman was 59 in The Unknown as 'Phoebe Martin'.
Robert Kellard. Robert Kellard was 31 in The Unknown as 'James Wetherford (as Robert Stevens)'.
J. Louis Johnson. J. Louis Johnson was 68 in The Unknown as 'Joshua (uncredited)'.
Henry Levin. Henry Levin was 37 in The Unknown as 'Director'
Henry Freulich. Henry Freulich was 40 in The Unknown as 'Director of Photography'
Mischa Bakaleinikoff. Mischa Bakaleinikoff was 55 in The Unknown as 'Music Director'
Malcolm Stuart Boylan. Malcolm Stuart Boylan was 49 in The Unknown as 'Screenplay'
Julian Harmon. Julian Harmon was 37 in The Unknown as 'Screenplay'
Wallace MacDonald. Wallace MacDonald was 55 in The Unknown as 'Producer'
Art Seid. Art Seid was 32 in The Unknown as 'Editor'
Dwight V. Babcock. Dwight V. Babcock was 37 in The Unknown as 'Adaptation'
George Brooks. George Brooks was 43 in The Unknown as 'Art Direction'
George Montgomery. George Montgomery was 46 in The Unknown as 'Set Decoration'