Sauro Scavolini directed and wrote that original murder story with inventive flashbacks with a terrific ending, and it was shot in 1972 the great year for italian murder movies. Scavolini was mainly a screenwriter (3 giallos for Sergio Martino). It's his first movie for cinema, he did 3 tv movies and another for cinema, they do not seem available, what a pity when you see the casting. This story is maybe slow but it gets more and more tense and it gets incredibly gripping in the last part, unforgettable. Thanks to the courageous french editor who released it.
