On the Threshold of Space

❮

Robert D. Webb

Director

Guy Madison

Capt. Jim Hollenbeck

Virginia Leith

Pat Lange

John Hodiak

Maj. Ward Thomas

Dean Jagger

Dr. Hugo Thornton

Warren Stevens

Capt. Mike Bentley

Martin Milner

Lt. Mort Glenn

King Calder

Lee Welch

Walter Coy

Lt. Col. Dick Masters

Ken Clark

Sgt. Ike Forbes

Donald Murphy

Sgt. Zack Deming

Barry Coe

Communications Officer

David Armstrong

Radio Technician

Helen Bennett

Mrs. Lange

Jo Gilbert

Secretary

Richard Grant

Medic

Dan C. Ogle

Self - Prologue

Juanita Close

Nurse

Donald Freed

Paramedic Officer

Shimon Wincelberg

Writer

Francis M. Cockrell

Writer

❯