Reparto y equipo

Arthur Crabtree

Marshall Thompson Major Jeff Cummings

Kynaston Reeves Prof. R. E. Walgate

Kim Parker Barbara Griselle

Stanley Maxted Col. Butler

Terry Kilburn Capt. Al Chester

James Dyrenforth Mayor Hawkins

Robert MacKenzie Const. Howard Gibbons

Peter Madden Dr. Bradley

Gil Winfield Dr. Warren

Michael Balfour Sgt. Kasper

Launce Maraschal Melville

Meadows White Ben Adams

E. Kerrigan Prescott Atomic Engineer

Lala Lloyd Amelia Adams

Shane Cordell Nurse

John Croydon

Buxton Orr

Lionel Banes

Richard Q. McNaughton