Veronica LakeVeronica Lake was 21 in The Hour Before the Dawn as 'Dora Bruckmann'.
Franchot ToneFranchot Tone was 39 in The Hour Before the Dawn as 'Jim Hetherton'.
John SuttonJohn Sutton was 35 in The Hour Before the Dawn as 'Roger Hetherton'.
Binnie BarnesBinnie Barnes was 41 in The Hour Before the Dawn as 'May Hetherton'.
Henry StephensonHenry Stephenson was 73 in The Hour Before the Dawn as 'Gen. Hetherton'.
Philip MerivalePhilip Merivale was 57 in The Hour Before the Dawn as 'Sir Leslie Buchanon'.
Nils AstherNils Asther was 47 in The Hour Before the Dawn as 'Kurt van der Breughel'.
Edmund BreonEdmund Breon was 61 in The Hour Before the Dawn as 'Freddy Merritt'.
David LelandDavid Leland was 12 in The Hour Before the Dawn as 'Tommy Hetherton'.
Mary GordonMary Gordon was 61 in The Hour Before the Dawn as 'Annie'.
Raymond SevernRaymond Severn was 13 in The Hour Before the Dawn as 'Jim (as a boy)'.
Aminta DyneAminta Dyne was 56 in The Hour Before the Dawn as 'Mrs. Muller'.
Frank TuttleFrank Tuttle was 51 in The Hour Before the Dawn as 'Director'
John F. SeitzJohn F. Seitz was 51 in The Hour Before the Dawn as 'Director of Photography'
Michael HoganMichael Hogan was 50 in The Hour Before the Dawn as 'Writer'Stuart GilmoreStuart Gilmore was 35 in The Hour Before the Dawn as 'Editor'
Miklós RózsaMiklós Rózsa was 37 in The Hour Before the Dawn as 'Original Music Composer'
W. Somerset MaughamW. Somerset Maugham was 70 in The Hour Before the Dawn as 'Novel'A. Earl HedrickA. Earl Hedrick was 48 in The Hour Before the Dawn as 'Art Direction'Hans DreierHans Dreier was 58 in The Hour Before the Dawn as 'Art Direction'Bertram C. GrangerBertram C. Granger was 52 in The Hour Before the Dawn as 'Set Decoration'