Slaughter Hotel is a 1971 Italian horror film directed by Fernando Di Leo and starring Klaus Kinski. The film follows a masked killer murdering the wealthy female inmates of a sanitorium.
(Summary from Wikipedia)
The Town That Dreaded Sundown (2014)
Black Belly of the Tarantula (1971)
Bloody Birthday (1981)
Terrifier (2016)
Maniac Cop 3: Badge of Silence (1992)
The Texas Chainsaw Massacre 2 (1986)
Sleepaway Camp (1983)
Hello Mary Lou: Prom Night II (1987)
The Texas Chainsaw Massacre (1974)
Alice, Sweet Alice (1976)
Seven Blood-Stained Orchids (1972)
Body Count (1986)
Curtains (1983)
Mother's Day (1980)
Opera (1987)
The Bloodstained Butterfly (1971)
The Bird with the Crystal Plumage (1970)
Four Flies on Grey Velvet (1971)
Slumber Party Massacre II (1987)
Don't Open Till Christmas (1984)
The Psychic (1977)
Final Exam (1981)
The Slumber Party Massacre (1982)
Prom Night (1980)
The Mutilator (1984)
Schizo (1976)
Dr. Giggles (1992)
Maniac Cop 2 (1990)
Ghostkeeper (1981)
Hell Night (1981)
The Final Terror (1983)
Suspiria (1977)
Knife of Ice (1972)
Death Walks on High Heels (1971)
Dude Bro Party Massacre III (2015)
Dead and Buried (1981)
Deep Red (1975)
Wishmaster (1997)
Madman (1982)
Blood Rage (1987)
Absurd (1981)
The House on Sorority Row (1983)
Terror Train (1980)
Who Saw Her Die? (1972)
Torso (1973)
New Year's Evil (1980)
Tragedy Girls (2017)
The Fifth Cord (1971)
Christmas Evil (1980)
Maniac (1980)
Pieces (1982)
Madhouse (1981)
The Initiation (1984)
Jack's Back (1988)
Maniac Cop (1988)
Silent Night, Deadly Night Part 2 (1987)
Sweet Sixteen (1983)
Tenebre (1982)
Bloodstained Shadow (1978)
Black Christmas (1974)
Sorority House Massacre (1986)
High Tension (2003)
Intruder (1989)
The Cat O'Nine Tails (1971)
Silent Night, Bloody Night (1972)
Halloween (1978)
Night Killer (1990)
Mortuary (1983)
Happy Birthday to Me (1981)
Stage Fright (1987)
The New York Ripper (1982)
Silent Madness (1984)
The Burning (1981)
Tourist Trap (1979)
Don't Go in the Woods (1981)