Phenomena (1985)

Shot in English and dubbed into Italian.

Frau Brückner. He was diseased; but he was my son! And you have. Why didn't I kill you before? I killed that no-good inspector and your professor friend, to protect him! And now. I'm gonna KILL YOU TO AVENGE HIM! Why don't you call your INSECTS! GO ON! CALL.

(at around 1h 00 mins) When Jennifer gets on the bus with the fly to find the bodies/killer, the bus makes a stop and the young man with the blonde hair behind her kissers the lady next to him as he gets off the bus. The next shots after that, the young man is still sitting behind Jennifer.

Crazy Credits

The English language credits claim that this film was "shot in Panavision." This film was shot with Panavision cameras and Panavision spherical lenses for the European spherical widescreen format of 1:1.66.

Synopsis (WARNING: Spoilers)