Delphine, a 35-year-old doctor, was strangled in her car. The murder took place two days after the operation of her son Jeremy, who was waiting for a kidney transplant. Jeremy's parents are not compatible and no one seems to know where the transplanted organ came from. Alice and Marquand investigate and discover that the donor is actually Jeremy's biological father, who is incarcerated in La Santé prison. Jeremy was unaware of his biological father's existence, and he died on the operating table. Chahine is back in Paris. Now that she knows the truth, will Alice be able to forgive her?...
