Death Knocks Twice

These "girls" are tough!

When private detective Bob Martin looking for a stolen diamond necklace, he also has a clever serial killer on the trail ...

Drama Thriller

Dean Reed

(Bob Martin)

Fabio Testi

(Francesco di Villaverde)

Ini Assmann

(Ellen Kent)

Leon Askin

(Peppe Mangano)

Werner Peters

(Charly Hollmann)

Riccardo Garrone

(Armando Locatelli)

Mario Brega

(Riccardo)

Hélène Chanel

(Angela)

Femi Benussi

(Lois Simmons)

Renato Baldini

(Lionel Simmons)

Teodoro Corrà

(Rinaldo)

Lanfranco Cobianchi

Tom Felleghy

(Berry)

Nadja Tiller

(Maria di Villaverde)

Anita Ekberg

(Sophia Ferretti)

Adolfo Celi

("der Professor")

Marlies Petersen

(Babsie)

Bruno Ariè

(Charly's Henchman)

Antonietta Fiorito

((credit only))