The Beast of Yucca Flats

Tor Johnson

Joseph Javorsky

Larry Aten

Patrolman Joe Dobson

Coleman Francis

Narrator / Gas Station Attendant / Newspaper Customer

Conrad Brooks

Man at Airfield

Douglas Mellor

Hank Radcliffe

Barbara Francis

Lois Radckiffe

Bing Stafford

Patrolman Jim Archer

Alan Francis

Mike, also called Art, Radcliffe

Ronald Francis

Randy Radcliffe

Anthony Cardoza

KGB Driver / Fat Man in Rescue Plane

John Morrison

KGB Agent with Mustache

Jim Miles

Javorsky's Aide

Jim Oliphant

The Stranded Motorist

Linda Bielema

The Stranded Motorist's Wife

George Principe

The Passing Motorist

Marcia Knight

Jim's Woman (uncredited)

Graham Stafford

Newsboy

Eric Tomlin

Car Chase Witness

Bob Labansat

FBI Agent needing to reload