Tenebre

John Saxon

Bullmer

Giuliano Gemma

Detective Germani

Anthony Franciosa

Peter Neal

Lara Wendel

Maria Alboretto

Daria Nicolodi

Anne

John Steiner

Christiano Berti

Ania Pieroni

Elsa Manni

Eva Robin's

Girl on Beach

Marino Masé

John

Mirella D'Angelo

Tilde

Carola Stagnaro

Detective Altieri

Enio Girolami

Department Store Manager (as Enio Girolami)

Christian Borromeo

Gianni

Veronica Lario

Jane McKerrow

Giampaolo Saccarola

Coroner (as Gianpaolo Saccarola)

Fulvio Mingozzi

Alboretto, the porter

Mirella Banti

Marion

Ippolita Santarelli

Prostitute

Isabella Amadeo

Bullmer's secretary