Dr. John Holden

Dana Andrews

Joanna Harrington

Peggy Cummins

Prof. Harrington

Maurice Denham

Dr. Julian Karswell

Niall MacGinnis

Mrs. Karswell

Athene Seyler

Professor Mark O'Brien

Liam Redmond

Professor K.T. Kumar

Peter Elliott

Lloyd Williamson

Ewan Roberts

Mr. Meek

Reginald Beckwith

Mrs. Meek

Rosamund Greenwood

Rand Hobart

Brian Wilde

Inspector Mottram

Richard Leech

Detective Simmons

Lloyd Lamble

Superintendent

Peter Hobbes

Chemist

Charles Lloyd Pack

Librarian

John Salew

Mrs. Hobart

Janet Barrow

Farmer

Percy Herbert

Air Hostess

Lynn Tracy

Hobart's Brother

John Harvey

Michelle Aslanoff

Hyma Beckley

1st Reporter

Ballard Berkeley

Ernest Blyth

Wallace Bosco

Narrator

Shay Gorman

Daniel Brown

Bates, the Butler

Walter Horsbrugh

2nd Reporter

Michael Peake

Richard Duke

Arthur Howell

Anthony John

Dan Lester

Leonard Llewellyn

Paul Phillips

Anthony Richmond

Terry Sartain

Bert Simms

Robert Brooks Turner