School for Secrets - 6.5★

Ralph Richardson - Prof. Heatherville

Raymond Huntley - Prof. Laxton-Jones

John Laurie - Dr. McVitie

David Tomlinson - Mr. Watlington

Finlay Currie - Sir Duncan Wills

Michael Hordern - Lt. Cmdr. Lowther

Pamela Matthews - Mrs. Watlington

Joan Young - Mrs. McVitie

Richard Attenborough - Jack Arnold

David Hutcheson - Squadron Leader Sowerby

Patrick Waddington - Group Capt. Aspinall

Cyril Smith - Flight Sgt. Cox

James Hayter - Warrant Officer

Robin Bailey - Wives' Escort Officer

Paul Carpenter - Flt. Lt. Argylle