Plot: While Roberto and Mauro are dealing with a thief called Fantomas for his extraordinary disguises, in the guise of a priest the man has stolen a gift from Roberto's house intended for Francesca, returning that evening, Anna and Luca follow the case of a young swimming champion attacked after a training session, in the darkness of the locker room. Viola has a bad fracture in her arm and will not be able to participate in the European championships