It Conquered the World (1956)

Director: Roger Corman

An alien from Venus tries to take over the world with the help of a disillusioned human scientist, as his wife, his best friend and the friend's wife try to intervene.

Cast

Lee Van Cleef

Dr. Tom Anderson

Beverly Garland

Claire Anderson

Peter Graves

Dr. Paul Nelson

Sally Fraser

Joan Nelson

Russ Bender

General James Pattick

Jonathan Haze

Pvt. Miguel Ortiz

Dick Miller

Sgt. Neil

Paul Harbor

Floyd Mason

Charles B. Griffith

Dr. Pete Shelton

Karen Kadler

Ellen Peters