血蝶 

Duccio Tessari's rare Giallo starring Helmut Berger, Giancarlo Sbragia, Evelyn Stewart, Silvano Tranquilli & Carole Andre. A young student is murdered in a park by an unseen assailant during a heavy thunderstorm. The murderer makes his escape, but is identified by a number of people at the park exit. A sports presenter from a local TV channel, Alessandro Marchi, is quickly arre...