The Crimson Circle

Noah Beery

Felix Marl

Hugh Wakefield

Derek Yale

Alfred Drayton

Insp. Parr

Niall MacGinnis

Jack Beardmore

June Duprez

Sylvia Hammond

Paul Blake

Sgt. Webster

Basil Gill

James Beardmore

Gordon McLeod

Brabazon

Renee Gadd

Millie Macroy

Ralph Truman

Lawrence Fuller

Robert Rendel

Commissioner

William Hartnell