Yoko Tani
— Lin Siyan
Guy Doleman
— Wayne Douglas
Ewan Roberts
— Det. Insp. Simons
Mark Eden
— Richard Webb
Anthony Booth
— Buddy Forrester
John Forbes-Robertson
Norma Parnell
— Day Nurse
Helen Lindsay
— Helen Douglas
Noel Johnson
— Charles Briars
Denis Holmes
— Det. Sgt. Rigby
John Forgeham
— Adrian Marlowe
Virginia Wetherell
— Karen
Yvette Wyatt
— Pam
Norman Scace
— Dr. Ambrose
Brian Haines
— Surgeon
Earl Green
— Peter
Neil Wilson
— Security Officer
Guy Standeven
— Counterhand