L'assassino... è al telefono

Rossella Falk as Margaret Vervoort Roger Van Hool as Peter Vervoort Anne Heywood as Eleanor Loraine Osvaldo Ruggieri as Thomas Brown Willeke van Ammelrooy as Dorothy Ada Pometti as Nurse Alessandro Perrella as Psychiatrist Телли Савалас as Ranko Drasovic

Alberto De Martino Director, Writer Serge-Henri Valcke Set Decoration Stelvio Cipriani Original Music Composer Joe D'Amato Director of Photography