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 ...

Cast

Dean Reed

Fabio Testi

Ini Assmann

Leon Askin

Werner Peters

Riccardo Garrone

Mario Brega

Hélène Chanel

Femi Benussi

Renato Baldini

Teodoro Corrà

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Lanfranco Cobianchi