THE BIRD WITH THE CRYSTAL PLUMAGE 1970 & THE CAT O' NINE TAILS 1971 Psycho Killers DOUBLE FEATURE

THE BIRD WITH THE CRYSTAL PLUMAGE 1970 - An American expatriate in Rome attempts to unmask a serial killer he witnessed in the act of an attempted murder, and who is now hunting him and his girlfriend.
The CAT O' NINE TAILS 1971 - Two journalists try to solve a series of murders connected to a pharmaceutical company's secret experiments, becoming targets of the killer themselves.