Directed by Mauro John Capece, produced by Giuseppe Lepore for Bielle Re and distributed by Minerva Pictures.

An infamous psychopath serial killer of influencers signs his heinous crimes using a blue knife. Caught, the blue knife killer is deemed incompetent. It will be a police inspector who, convinced that his madness is all fiction, with a pressing interrogation will try to bring him to the lucid confession of his murders: reverse!