Clair Batagiotti

Teo, a private detective, never decides to heed his fiancée Sonia's requests to abandon his dangerous profession and go work for her father, a wealthy industrialist. A new case always comes up, causing Teo to postpone his visit to his future father-in-law. However, one day he is hired under mysterious circumstances: he receives orders from a woman he doesn't know to do something that is still unclear. Nevertheless, the woman pays him handsomely and gives him a vague idea of the case. To his surprise, as soon as the woman leaves, Teo is attacked by four men. Recovering from his injuries, he begins to investigate his client...

Famous crime story writer puzzles police investigator when all the women he gets involved with get murdered.