Boris Karloff
Dr. Leon Kravaal
Jo Ann Sayers
Nurse Judith Blair
John Dilson
John Hawthorne
Hal Taliaferro
Sheriff Stanton
Charles Trowbridge
Dr. Harvey
Minta Durfee
Frozen Therapy Patient (uncredited)
Charles Miller
Doctor Spectator Explaining Procedure (uncredited)
Eddie Dew
Doctor Spectator Listening to Explanation (uncredited)
James Conaty
Doctor Spectator (uncredited)
Wedgwood Nowell
Doctor Spectator (uncredited)
Cyril Ring
Doctor Spectator (uncredited)
William Marion
Doctor Spectator (uncredited)
Landers Stevens
Doctor Spectator (uncredited)
Ivan Miller
Sheriff Haley (uncredited)
Bruce Bennett
State Trooper (uncredited)
Charles Halton
Doctor in Front Row in Final Scene (uncredited)
Lee Willard
Frozen Body of Jasper Adams (uncredited)
