The professor's night.

It’s 3 a.m. Sergio and his wife Anna are deeply sleeping when the phone starts ringing. On the other side of the phone, an hesitant voice says: “There is a dead person down below”. Sergio is confused and decided to ring up his downstairs neighbor Enzo, who always bickers with his girlfriend Cinzia. But when Enzo come to Sergio’s house, he says that doesn’t even know about that call. Sergio and Enzo make hypothesis and assumptions and then decide to start an investigation through all the apartments in the building. Landing after landing, neighbor after neighbor, the investigation lead Sergio, Enzo and other neighbors to the last door. But sometimes things aren’t what they appear to be…