Le commandant Rovère et la juge Nadia Lintz se retrouvent en pleine déprime sur une affaire de meurtre, celui de Zelda, chanteuse de cabaret, transexuel.
A cabaret singer has been found dead in the establishment in which she usually performed. Her identity is a mystery. Lintz and Rovere will have to follow a trail that leads them to the victim's sister, whose identity she had assumed.
