Gene Barry

Michael A. Donovan

Joan Collins

Anne Langley

Richard Todd

Col. Victor Redmayne

Tom Adams

Peter Langley

Suzanna Leigh

Donetta

Michael Rennie

Goldsmith

Gretchen Franklin

Bus Conductress

Marius Goring

Shevik

Scott Forbes

Pannell

Colin Gordon

Kitteridge

Guy Deghy

Dr. Lundgren

John Welsh

Heiner

Robert Raglan

Fennimore

Derek Ware

Shevik's Henchman

Peter Graham Scott