| Person | Type | Job | Role(s) |
|---|---|---|---|
 Al Clark | Crew | Editing | Editor |
Ben Oakland | Crew | Sound | Music |
Benjamin H. Kline | Crew | Camera | Director of Photography |
 Edward Bernds | Crew | Sound | Sound Engineer |
Fred B. Phillips | Crew | Costume & Make-Up | Makeup Artist |
Gerard Carbonara | Crew | Sound | Music |
Gregory Stone | Crew | Sound | Music |
Harold Shumate | Crew | Writing | Story |
Irving Briskin | Crew | Production | Executive Producer |
Karl Brown | Crew | Writing | Screenplay |
Karol Rathaus | Crew | Sound | Music |
Lionel Banks | Crew | Art | Art Direction |
Mischa Bakaleinikoff | Crew | Sound | Music |
 Morris Stoloff | Crew | Sound | Music Director |
 Nick Grindé | Crew | Directing | Director |
 Wallace MacDonald | Crew | Production | Producer |
Ralph S. Willard | Crew | Crew | Technical Advisor |
 Boris Karloff | Cast | Actor | Dr. Leon Kravaal |
 Bruce Bennett | Cast | Actor | State Trooper (uncredited) |
 Byron Foulger | Cast | Actor | Dr. Bassett |
 Charles Halton | Cast | Actor | Doctor in Front Row in Final Scene (uncredited) |
Charles Miller | Cast | Actor | Doctor Spectator Explaining Procedure (uncredited) |
 Charles Trowbridge | Cast | Actor | Dr. Harvey |
 Cyril Ring | Cast | Actor | Doctor Spectator (uncredited) |
 Eddie Dew | Cast | Actor | Doctor Spectator Listening to Explanation (uncredited) |
 Ernie Adams | Cast | Actor | Pete Daggett |
 Hal Taliaferro | Cast | Actor | Sheriff Stanton |
 Ivan Miller | Cast | Actor | Sheriff Haley (uncredited) |
 James Conaty | Cast | Actor | Doctor Spectator (uncredited) |
 Jo Ann Sayers | Cast | Actress | Nurse Judith Blair |
 John Dilson | Cast | Actor | John Hawthorne |
 Landers Stevens | Cast | Actor | Doctor Spectator (uncredited) |
 Lee Willard | Cast | Actor | Frozen Body of Jasper Adams (uncredited) |
 Minta Durfee | Cast | Actress | Frozen Therapy Patient (uncredited) |
 Roger Pryor | Cast | Actor | Dr. Tim Mason |
 Stanley Brown | Cast | Actor | Bob Adams |
 Wedgwood Nowell | Cast | Actor | Doctor Spectator (uncredited) |
William Marion | Cast | Actor | Doctor Spectator (uncredited) |
| Person | Type | Job | Role(s) |
