John Loder

Maxwell Archer

Leueen MacGrath

Sarah

Athole Stewart

Supt. Gordon

Marta Labarr

Nina

George Merritt

Insp. Cornell

Ronald Adam

Nicolides

Peter Hobbes

George Gull Jr.

Ralph Roberts

George Gull Sr.

Syd Crossley

Perkins

Barbara Everest

Miss Duke

John Paddy Carstairs