Faith Domergue as Lisa Moya

Richard Long as Paul Able

Marshall Thompson as Tom Markel

Kathleen Hughes as Julia Thompson

William Reynolds as Pete Norton

Jack Kelly as Carl Turner

Myrna Hansen as Marian Sheehan

David Janssen as Rico Nardi

Leonard Strong as Daru

James Dobson as Cpl. Nick Hommel

Walter Coy as Police Inspector

Olan Soule as Major Martin Fielding

Helen Wallace as Mrs. Webber

Mary Alan Hokanson as Army Nurse

John Halloran as High Lamian Priest

Alan Reynolds as Captain Williams

Edward Platt as Lamian Threatening Death (uncredited)

David Armstrong as

Rama Bai as

George Calliga as

Carl Carlsson as

Ruth Carlsson as

Dick Cherney as

Paul Cristo as

George DeNormand as

Don Dillaway as

George Ford as

Ben Frommer as

Chuck Hamilton as

Sam Harris as

Chester Hayes as

Shep Houghton as

Walter Lawrence as

Charles Morton as

Jack Perry as

Murray Pollack as

Paul Power as

John Roy as

Bing Russell as

Jack Rutherford as

George Sowards as

William Vedder as

Jarl Victor as

Lawrence A. Williams as