 Boris KarloffDr. Henryk Savaard | Dr. Henryk Savaard |
 Lorna GrayJanet Savaard | Janet Savaard |
 Robert Wilcox'Scoop' Foley | 'Scoop' Foley |
 Roger PryorDistrict Attorney Drake | District Attorney Drake |
 Don BeddoeLieutenant Shane | Lieutenant Shane |
 Ann DoranBetty Crawford | Betty Crawford |
 Joe De StefaniDr. Stoddard | Dr. Stoddard |
 Charles TrowbridgeJudge Bowman | Judge Bowman |
 Byron FoulgerLang | Lang |
 Dick CurtisJury Foreman Clifford Kearney | Jury Foreman Clifford Kearney |
 James CraigJuror Watkins | Juror Watkins |
 John TyrrellJuror Sutton | Juror Sutton |
| GGeorge AndersonPrison Warden (uncredited) | Prison Warden (uncredited) |
 Stanley BlystonePrison Guard (uncredited) | Prison Guard (uncredited) |
 Sam AshDruggist (uncredited) | Druggist (uncredited) |
 Harlan BriggsDefense Attorney Parker (uncredited) | Defense Attorney Parker (uncredited) |
 Stanley BrownBob Roberts (uncredited) | Bob Roberts (uncredited) |
| FFlo CampbellHousewife (uncredited) | Housewife (uncredited) |
 John DilsonKing - City Editor (uncredited) | King - City Editor (uncredited) |
| CCarl FaulknerBailiff (uncredited) | Bailiff (uncredited) |
 Chuck HamiltonJuror (uncredited) | Juror (uncredited) |
 Frank JaquetCigar-Smoking Fat Juror (uncredited) | Cigar-Smoking Fat Juror (uncredited) |
 Kenner G. KempReporter (uncredited) | Reporter (uncredited) |
| WWilliam LallyBailiff (uncredited) | Bailiff (uncredited) |
| PPerc LaundersBailiff (uncredited) | Bailiff (uncredited) |
| LLarry LundCourt Clerk (uncredited) | Court Clerk (uncredited) |
| IIan MaclarenPriest (uncredited) | Priest (uncredited) |
 Charles McAvoyPrison Official (uncredited) | Prison Official (uncredited) |
| CCharles MillerDr. Avery - Juror (uncredited) | Dr. Avery - Juror (uncredited) |
 Bert MoorhouseReporter (uncredited) | Reporter (uncredited) |
