Coliandro has to protect Giacomino, a peculiar, funny and ingenious character who has seen something he shouldn't have seen and who is threatened with death.

Coliandro seems to be on the verge of positively concluding a gallant adventure. But, at the climax, Giacomino shows up at his house, sleepy, hungry and with handcuffs on his wrists. The motivation is incredible: Giacomino is accused of being the author of a series of brutal murders. To help his friend, Coliandro will have to hunt down the real serial killer.