导演 Gordon Douglas

Philip 'Scotty' Grayson Louis Hayward

Daniel F. O'Hara Dennis O'Keefe

Dr. Anastasia 'Toni' Neva Louise Allbritton

Dr. Ritter von Stolb Carl Esmond

Igor Braun Onslow Stevens

Krebs 雷蒙德·伯尔

Dr. Frederick Townsend Art Baker

Dr. William Forrest Lowell Gilmore

Anton Radchek Philip Van Zandt

Dr. Homer Allen Charles Evans

Carl Bemish Frank Ferguson

Narrator (voice) Reed Hadley

Police Sergeant Ray Teal

FBI Chemist William Tannen

Voice on Tape Recorder Gale Storm

Mr. North Arthur Space

Mrs. Ecko, the Landlady Tamara Shayne

FBI Agent Miller Keith Richards

Adolph Mizner Grandon Rhodes

Police Detective Gaines Steve Pendleton

Feodore Howard Negley

FBI Agent Alison Jimmy Lloyd

FBI Agent Thompson Myron Healey

G.W. Hunter 约翰·汉密尔顿

Paul Bryar

Fred Coby

Bert Davidson

Marten Lamont

Lee Phelps

Suzanne Ridgway

Arthur Tovey

Crane Whitley