Lloyd Bridges

Dr. Doug Standish

Brian Kelly

Dr. Craig Mosby

Shirley Eaton

Dr. Margaret E. 'Maggie' Hanford

David McCallum

Dr. Philip Volker

Keenan Wynn

Hank Stahl

Marshall Thompson

Dr. Orin Hillyard

Gary Merrill

Dr. August 'Gus' Boren

Ron Hayes

Brinkman

George Shibata

Prof. Uji Hamaru

Donald Linton

Vice President

Frank Logan

Captain of the Diligence

Don Wells

Sonar Man on the Dilligence

Celeste Yarnall

Secretary

Andrew Marton