One on Top of the Other

Jean Sorel

Dr. George Dumurrier

Marisa Mell

Susan Dumurrier / Monica Weston

Elsa Martinelli

Jane Bleeker

Alberto de Mendoza

Henry Dumurrier

John Ireland

Inspector Wald

Riccardo Cucciolla

Benjamin Wormser

Franco Balducci

Officer Loveday

Bill Vanders

Insurance Agent

Giuseppe Addobbati

Brent

Félix Dafauce

Royal Insurance Official

Jesús Puente

Sergeant Rodriguez

George Rigaud

Arthur Mitchell

Jean Sobieski

Larry

Faith Domergue

Marta

Lucio Fulci

Graphologist

Malisa Longo

Elizabeth O'Neill

Geoffrey Copleston

District Attorney

Raffaele Mottola

Governor

Bobby Rhodes

Prison Guard

Lucio Fulci

Director

Massimo Castellani

First Assistant Director

Albino Cocco

First Assistant Director

Vittoria Vigorelli

Script Supervisor

Lucio Fulci

Story

Roberto Gianviti

Story

Lucio Fulci

Screenplay

José Luis Martínez Mollá

Screenplay

Roberto Gianviti

Screenplay

Massimo Manasse

Unit Manager

Francisco J. Tudela

Unit Manager

Gray Frederickson

Production Assistant