Inspector Peterson

Kara Niemann

Dr. Nils Ahlen

Sven Nystrom

Helga Ahlen

Baroness Erland

McTavis, ferry pilot

Det. Holt

Trerik

Chief of the Lost Valley

Det. Anderson

Prof. Lind

Director-General of the Reasearch Institution

Anders

Colonel Strand (uncredited)

Noma (uncredited)

Frau Lind (uncredited)

Bertil (uncredited)

Production

Camera

Sound

Directing

Directing

Camera

Production

Sound

Production

Crew

Costume & Make-Up

Editing

Sound

Writing

Art