Paulette Stone
Martine Brochard
Mark Burton
John Richardson
Alma Burton
Marta May
Mr. Hamilton
John Bartha
Mrs. Randall
Olga Pehar
Jenny Hamilton
Verónica Miriel
Olga Montes
Mr. Randall
Richard Kolin
Hospital Nurse
Rina Mascetti
Policeman
Fulvio Mingozzi
Vittorio Fanfoni
Receptionist at Hotel Presidente
Francesco Narducci
Naiba Campbell
Ines Pellegrini
Coroner
Tom Felleghy
Lorenzo Piani
Gail Alvarado (voice)
Carolyn De Fonseca
Policeman (uncredited)
Nestore Cavaricci
Murder Victim at Castle (uncredited)
Laura Trotter
Inspector Tudela
Andrés Mejuto
Lisa Sanders
Mirta Miller
Robby Alvarado
Daniele Vargas
Rev. Bronson
George Rigaud
Gail Alvarado
Silvia Solar
Martinez - the tour guide
Raf Baldassarre
Inspector Lara
José María Blanco
Director
Umberto Lenzi
Screenplay
Story
Original Music Composer
Bruno Nicolai
Félix Tusell
Director of Photography
Antonio Millán
Producer
Joseph Brenner
Co-Producer
José María Cunillés
Editor
Amedeo Moriani
Costume Design
Adriana Spadaro
Still Photographer
Makeup Artist
Mario Di Salvio
Alfredo Tiberi
Set Designer
José Massagué