Death Knocks Twice (1969)

Director: Harald Philipp

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

Cast

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