Michael Rennie

Lord John Roxton

Jill St. John

Jennifer Holmes

David Hedison

Ed Malone

Claude Rains

Prof. George Edward Challenger

Fernando Lamas

Manuel Gomez

Richard Haydn

Prof. Summerlee

Ray Stricklyn

David Holmes

Jay Novello

Costa

Vitina Marcus

Native Girl

Ian Wolfe

Burton White

Sam Harris

Colin Campbell

Prof. Waldron (uncredited)

John Graham

Stuart Holmes (uncredited)

Larry Chance

Indian Chief (uncredited)

Bert Stevens

Reporter at Airport (uncredited)

Harold Miller

Al Bain

Man at Airport (uncredited)

Bess Flowers

Guest at Zoological Institute Forum (uncredited)

Kenner G. Kemp

Guest at Zoological Institute Forum (uncredited)

Cosmo Sardo

Guest at Zoological Institute Forum (uncredited)

Murray Pollack

Guest at Zoological Institute Forum (uncredited)

Irwin Allen

Director

Ad Schaumer

Asistente de Dirección

Charles Bennett

Guión, Guión Adaptado

Irwin Allen

Guión, Guión Adaptado

Arthur Conan Doyle

Novela

Winton C. Hoch

Director de Fotografía

Paul Sawtell

Compositor de la Música Original

Bert Shefter

Compositor de la Música Original

Irwin Allen

Productor, Compañía de Produccion

Irwin Allen Productions

Compañía de Produccion

Helen Turpin

Estilista

Ben Nye

Maquilladora

Paul Zastupnevich

Diseño de Vestuario

Hugh S. Fowler

Editor

Duncan Cramer

Dirección Artística

Walter M. Simonds

Dirección Artística

Joseph Kish

Decorados

Walter M. Scott

Decorados

John Sturtevant

Decorados

Willis H. O'Brien

Visual Effects