Your Vice Is a Locked Room and Only I Have the Key(Il tuo vizio è una stanza chiusa e solo io ne ho la chiave)

Oliviero is a burnt-out writer, degenerate drunk, and abusive husband who spends his days terrorizing his wife. So when young women are found murdered near his estate in Venice, he becomes the prime suspect. But what do Oliviero’s niece, a watchful stranger, and a black cat named Satan have to do with it?