The Killer Nun (1979) "Suor Omicidi" (original title) br 85 min | Horror, Mystery, Thriller | 10 May 1979 (Italy) br br A demented nun sliding through morphine addiction into madness, whilst presiding over a regime of lesbianism, torture and death. Sister Gertrude is the head nursenun in a general hospital, whose increasingly psychotic behavior endangers the staff and patients around her.