Gréco and Max investigate in a cosmetic surgery clinic where jet-setters from all over the world have surgery, in the greatest of secrecy. A young surgeon was assassinated, then it was the big boss's turn to be shot. What hides the luxurious clinic of Doctor Rivière? Rose is very embarrassed because her own mother, the wealthy Barbara Bellecour, finds herself on the list of suspects. Barbara was indeed not only the faithful patient but one of the mistresses of Doctor Rivière...