贝拉·卢戈西

Bela Lugosi

饰：Dr. Feodor Orloff,Prof. John Dearborn

休·威廉姆斯

Hugh Williams

饰：Det. Insp. Larry Holt

格瑞塔·基恩特

Greta Gynt

饰：Diana Stuart

埃德蒙瑞安

Edmon Ryan

饰：Lieutenant O'Reilly

Wilfred Walter

饰：Jake

Alexander Field

饰：Fred Grogan

O.B. Clarence

饰：Prof. John Dearborn (uncredited)

May Hallatt

饰：Policewoman Grady (uncredited)

Bryan Herbert

Bryan Herbert

饰：Police Supt. Walsh (uncredited)

Arthur E. Owen

Arthur E. Owen

饰：Blind Lou (uncredited)

Charles Penrose

饰：Morrison, undercover detective (uncredited)

Gerald Pring

Gerald Pring

饰：Henry Stuart (uncredited)

Julie Suedo

Julie Suedo

饰：Orloff's Secretary (uncredited)

O.B. Clarence