The Embalmer

Il mostro di Venezia, (The Monster of Venice') is a 1965 Italian giallo film directed by Dino Tavella, and starring Gino Marturano, Alcide Gazzotto, and Alba Brotto in the girl part, which in this kind of film means she’s doomed.

A serial killer dressed in scuba gear and a wet suit is on the loose in the canals of Venice. He kills his prey, (women only, at least he’s got that going for him) by drowning them in the canals and taking their bodies back to his underwater lair (a submerged monastery) where he embalms them to preserve their beauty and look at them forever, at touch them and do other dirty stuff.