These "girls" are tough!
Death Knocks Twice
When private detective Bob Martin looking for a stolen diamond necklace, he also has a clever serial killer on the trail ...
Harald PhilippDirector
Harald PhilippScreenplay
Sergio GarroneScreenplay
Mario Di NardoScreenplay
Sergio GarroneStory
Max Pierre SchaefferStory
Top Billed 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
Teodoro Corrà
Rinaldo
Tom Felleghy
Berry
Nadja Tiller
Maria di Villaverde
Anita Ekberg
Sophia Ferretti
Adolfo Celi
"der Professor"
