Jeremy Brett as David Malcolm

Prunella Ransome as Barbara Carey

Nicky Henson as Martin Foster

Pamela Salem as Carol

Vassili Karis as Giulio

Gabriele Tinti as Enzo Lombardi

Fabrizio Jovine as Inspector Casati

Sherry Buchanan as Mary Ann Saunders

Umberto Raho as Doctor

Patrizia Webley as Valeria Santoro

Lars Bloch as Charles

Marco Mastantuono as Frederick

Veronica Wells as Cynthia

Paul Müller as Maroschiallo

Mascia Musy as Consuelo

Katherine Berg as Arlene

Walter Williams as Optician

Peter Boom as Hotel Concierge

Helen Stirling as Director of Academy

Stefania Maccarone as Girl on boat