Richard Harris
— Jules Maigret
Patrick O'Neal
— Kevin Portman
Victoria Tennant
— Victoria Portman
Ian Ogilvy
— Daniel Portman
Barbara Shelley
— Louise Maigret
Richard Durden
— Julian Braden
Eric Deacon
— Tony Portman
Andrew McCullough
— Sgt. Lucas
Annette Andre
— Judith Hollenbeck
Dominique Barnes
— Tara Portman
Don Henderson
— Barge Captain
Caroline Munro
— Carolyn Page
Eve Ferret
— Mrs. Tippet
Mark Audley
— Ekers
Lachele Carl
— Sgt. Leila Normand
Milo Sperber
— Durbin
Vernon Dobtcheff
— Gannett
John Abineri
— Renault
Adrian Cairns
— Dr. Parton