Inspector Angelo De Paul is assigned to investigate a horrifying series of murders that have gripped Venice and left the authorities baffled.

Flavia

Inspector Angelo De Pol

Fabio, Flavia's husband

Maestrin

Bruno Nielsen (as Vassili Karamesinis)

Alberto

Marzia

Man in Cinema (uncredited)

Surveillance Cop (uncredited)

Cleaning Lady (uncredited)

Prostitute (uncredited)

Marco (uncredited)

Flora (uncredited)

Night Guard (uncredited)

Old Witness (uncredited)
December 31, 1979

Flavia

Inspector Angelo De Pol

Fabio, Flavia's husband

Maestrin

Bruno Nielsen (as Vassili Karamesinis)

Alberto

Marzia

Man in Cinema (uncredited)

Surveillance Cop (uncredited)

Cleaning Lady (uncredited)

Prostitute (uncredited)

Marco (uncredited)

Flora (uncredited)

Night Guard (uncredited)

Old Witness (uncredited)
