95		Eyes of a Stranger (Horror, Thriller, 1981)
85		Curse of Chucky (Horror, Thriller, 2013)
85		New Year's Evil (Horror, Thriller, 1980)
82		Prom Night II (Horror, Thriller, 1987)
82		The Card Player (Horror, Mystery, Thriller, 2004)
81		Tenebre (Horror, Mystery, Thriller, 1982)
81		Sweet Kill (Horror, Thriller, 1972)
80		The Horror Vault Vol.1 (Horror, Thriller, 2008)
75		Mute Witness (Horror, Thriller, 1995)
75		Body Parts (Horror, Thriller, 1991)
75		Ripper (Horror, Thriller, 2001)
75		Madman (Horror, Thriller, 1981)
75		Night School (Horror, Mystery, 1981)
74		Friday the 13th Part III (Horror, Thriller, 1982)
73		Blind Date (Horror, Thriller, 1984)
73		Saw (Horror, Mystery, Thriller, 2004)
72		Blood Harvest (Horror, 1987)
72		Valentine (Horror, Mystery, Thriller, 2001)
71		The House on Sorority Row (Horror, Mystery, Thriller, 1983)
70		Giallo (Horror, Thriller, 2009)
70		Hellbent (Horror, Thriller, 2004)
70		Halloween (Horror, Thriller, 1978)
70		The Burning (Horror, 1981)
70		No Man's Land: The Rise of Reeker (Horror, Thriller, 2008)
69		Maniac Cop 2 (Crime, Horror, Action, 1990)
69		The Killing Floor (Crime, Horror, Mystery, 2007)
68		The Zodiac Killer (Horror, Mystery, Thriller, 1971)
68		Criminally Insane (Horror, Thriller, 1975)
67		Nightwatch (Drama, Horror, Thriller, 1997)
67		The Signal (Horror, Sci-Fi, Thriller, 2007)
67		Terror Night (Horror, 1987)
67		My Little Eye (Horror, Mystery, Thriller, 2002)
67		Happy Birthday to Me (Horror, Mystery, Thriller, 1981)
67		Sleepless (Horror, Mystery, Thriller, 2001)
66		The Toolbox Murders (Horror, Mystery, Thriller, 1978)
65		Candyman: Farewell to the Flesh (Horror, 1995)
65		Amusement (Horror, Thriller, 2008)
65		I Spit on Your Grave: Vengeance is Mine (Horror, Thriller, 2015)
65		Run! Bitch Run! (Horror, Thriller, 2009)
65		ATM (Horror, Thriller, 2012)
65		Bloodmoon (Horror, Thriller, 1990)
62		The Baby (Horror, Thriller, 1973)
62		The Texas Chain Saw Massacre (Horror, Thriller, 1974)
61		Destroyer (Horror, Thriller, 1988)
61		Halloween 5 (Horror, Thriller, 1989)
60		Final Destination (Horror, Thriller, 2000)
60		A Thousand Pleasures (Horror, Thriller, 1968)
60		The Grudge 2 (Horror, Thriller, 2006)
60		976-Evil II (Horror, 1991)
60		Maniac Cop (Action, Crime, Horror, 1988)
60		Hush (Horror, Thriller, 2008)
60		The Sex Killer (Horror, Thriller, 1967)
60		Trailer Park of Terror (Horror, 2008)
60		The Strangler (Horror, 1964)
60		Summer's Moon (Horror, Thriller, 2009)
60		High Tension (Horror, 2003)
60		Hush (Horror, Thriller, 2016)
60		Perkins' 14 (Horror, Thriller, 2009)
60		Scream (Horror, Mystery, 1996)
59		Morirai a mezzanotte (Horror, Mystery, Thriller, 1986)
59		Visiting Hours (Horror, Thriller, 1982)
59		Psycho III (Horror, Mystery, Thriller, 1986)
59		Aenigma (Horror, Romance, Thriller, 1987)
58		Silent Rage (Action, Horror, Sci-Fi, 1982)
57		The Spiral Staircase (Horror, Mystery, Thriller, 1945)
57		Psycho (Horror, Mystery, Thriller, 1998)
57		Blackout (Horror, Mystery, Thriller, 2008)
57		Anamorph (Crime, Horror, Thriller, 2007)
57		Three on a Meathook (Horror, 1973)
57		The Prowler (Horror, Mystery, Thriller, 1981)
57		Trauma (Horror, Mystery, Thriller, 1993)
57		Truth or Dare?: A Critical Madness (Horror, 1986)
57		The First Power (Crime, Horror, Thriller, 1990)
57		The Darkroom (Horror, Mystery, Thriller, 2006)
57		Crawlspace (Horror, Thriller, 1986)
56		Deadly Dreams (Horror, Thriller, 1988)
56		Hellbound: Hellraiser II (Horror, Thriller, 1988)
56		Dr Jekyll & Sister Hyde (Horror, Sci-Fi, 1971)
56		Playroom (Horror, Thriller, 1989)
56		Deadly Intruder (Horror, Thriller, 1988)
56		I, Madman (Horror, Thriller, 1989)
55		Jeepers Creepers (Horror, Mystery, 2001)
55		Faust (Fantasy, Horror, 2000)
55		Special Effects (Drama, Horror, Thriller, 1984)
55		The Amityville Horror (Horror, 1979)
55		Chained (Horror, Thriller, 2012)
55		Mikey (Horror, Thriller, 1992)
55		Night Trap (Horror, Thriller, 1993)
55		The Ultimate Degenerate (Horror, Thriller, 1969)
55		House of Horrors (Horror, Thriller, 1946)
55		The Psychic (Horror, Thriller, 1991)
55		House of 1000 Corpses (Horror, 2003)
55		Panic Button (Horror, Thriller, 2011)
55		Trick 'r Treat (Horror, Thriller, 2007)
55		Nature Morte (Horror, Thriller, 2006)
55		Halloween II (Horror, 1981)
54		City in Panic (Crime, Horror, Thriller, 1986)
54		Psycho (Horror, Mystery, Thriller, 1960)
54		Pieces (Horror, Mystery, 1982)
53		Forced Entry (Horror, Thriller, 1975)
53		Heart of Midnight (Drama, Horror, Thriller, 1988)
53		The Confessional (Horror, 1976)
52		The Strangers (Horror, Mystery, Thriller, 2008)
52		An American Haunting (Horror, Mystery, Thriller, 2005)
52		The Fan (Drama, Horror, Thriller, 1981)
52		House (Drama, Horror, Thriller, 2008)
52		Left for Dead (Horror, Mystery, Thriller, 2007)
52		Child's Play 3 (Fantasy, Horror, Thriller, 1991)
52		White of the Eye (Horror, Thriller, 1987)
52		Evidence (Horror, Mystery, Thriller, 2013)
52		The Invisible Ray (Horror, Sci-Fi, Thriller, 1936)
52		The Poughkeepsie Tapes (Horror, Mystery, Thriller, 2007)
52		Maniac (Drama, Horror, Thriller, 1980)
51		The Horror Show (Horror, 1989)
50		2:13 (Horror, Thriller, 2009)
50		Cannibal Holocaust (Adventure, Horror, 1980)
50		The Last Horror Movie (Horror, Thriller, 2003)
50		The Wizard of Gore (Horror, Mystery, 2007)
50		Dark Summer (Horror, Thriller, 2015)
50		Little Erin Merryweather (Horror, Thriller, 2003)
50		Countdown (Horror, Thriller, 2012)
50		Dark Asylum (Thriller, Horror, 2001)
50		The Perfect House (Horror, 2013)
50		The Coffin (Horror, Thriller, 2008)
50		Nursie (Horror, Thriller, 2004)
49		The Living and the Dead (Drama, Horror, Mystery, 2006)
49		Invasion of the Body Snatchers (Horror, Sci-Fi, 1978)
49		The Sentinel (Horror, 1977)
49		In the Mouth of Madness (Fantasy, Horror, Mystery, 1994)
49		Alone in the Dark (Horror, Thriller, 1982)
49		Blood Link (Crime, Horror, 1982)
49		Cherry Falls (Horror, Mystery, Romance, 2000)
49		The Midnight Meat Train (Fantasy, Horror, Mystery, 2008)
48		The Mutilator (Horror, 1984)
48		The Love Butcher (Horror, 1975)
48		Silent Night, Bloody Night (Horror, Mystery, Thriller, 1972)
48		C.H.U.D. (Horror, Sci-Fi, 1984)
47		Prince of Darkness (Horror, 1987)
47		Vampire (Drama, Horror, Thriller, 2011)
47		The Cell (Horror, Sci-Fi, Thriller, 2000)
47		Impulse (Horror, Thriller, 1974)
47		Twisted (Horror, Thriller, 1986)
47		The Ugly (Drama, Horror, Thriller, 1997)
47		Craze (Horror, 1974)
47		Chillers (Horror, 1987)
47		Cardiac Arrest (Crime, Horror, Thriller, 1980)
47		Seven Days to Live (Drama, Horror, Thriller, 2000)
47		Lady Stay Dead (Drama, Horror, Thriller, 1981)
47		My Soul to Take (Horror, Mystery, Thriller, 2010)
47		Henry II: Portrait of a Serial Killer (Crime, Horror, Thriller, 1996)
47		Evilenko (Crime, Horror, Thriller, 2004)
47		Insidious: Chapter 2 (Fantasy, Horror, Thriller, 2013)
46		Death Valley (Crime, Horror, Thriller, 1982)
46		The Stepfather (Crime, Drama, Horror, 1987)
46		FleshEater (Horror, 1988)
45		House on the Edge of the Park (Horror, Thriller, 1980)
45		Saw V (Horror, Mystery, 2008)
45		The Long Island Cannibal Massacre (Horror, Thriller, 1980)
45		Stage Fright (Horror, Thriller, 1980)
45		The Unseen (Horror, Thriller, 1980)
45		Hunger (Horror, Thriller, 2009)
45		Terror Train (Horror, Thriller, 1980)
45		Funeral Home (Horror, Thriller, 1980)
45		Wolfen (Horror, Thriller, 1981)
45		Invitation Only (Horror, Romance, 2009)
45		Christmas Evil (Horror, Thriller, 1980)
45		Necronomicon: Book of Dead (Horror, 1993)
45		XII (Horror, Thriller, 2008)
45		1408 (Fantasy, Horror, 2007)
45		Shadow: Dead Riot (Action, Horror, 2006)
45		House on Haunted Hill (Horror, 1959)
45		You Are Not Alone (Horror, Thriller, 2014)
45		Prom Night (Horror, Thriller, 1980)
45		Amateur Porn Star Killer (Crime, Horror, 2006)
45		The Driller Killer (Horror, Thriller, 1979)
45		The Dark (Horror, Sci-Fi, 1979)
45		Saw II (Horror, Mystery, 2005)
45		Long Distance (Horror, Thriller, 2005)
45		The Black Room (Crime, Horror, 1935)
45		Confessions of a Serial Killer (Crime, Horror, Thriller, 1985)
45		The Face at the Window (Drama, Horror, 1939)
45		Evil Remains (Horror, Thriller, 2004)
45		Ghoul (Horror, Thriller, 2015)
45		The Dark Hours (Horror, Thriller, 2005)
45		A Haunting at Silver Falls (Horror, Thriller, 2013)
45		Evil Never Dies (Horror, Thriller, 2014)
45		X-Ray (Horror, Thriller, 1981)
45		You're Next (Horror, Thriller, 2011)
45		Chromeskull: Laid to Rest 2 (Horror, 2011)
45		Effects (Horror, Thriller, 1980)
45		The Hitcher (Crime, Horror, 2007)
45		Venom (Horror, Thriller, 1981)
45		Just Before Dawn (Horror, Thriller, 1981)
45		Cassadaga (Horror, Thriller, 2011)
45		The Collection (Horror, 2012)
45		The Silent Scream (Horror, Thriller, 1979)
45		Hell Night (Horror, Thriller, 1981)
45		No Vacancy (Horror, 2012)
45		Let's Scare Jessica to Death (Drama, Fantasy, Horror, 1971)

Notes: Movies similar to He Knows You're Alone, Movies like He Knows You're Alone, Horror, Thriller, Armand Mastroianni, Don Scardino, Caitlin O'Heaney, Elizabeth Kemp, Tom Rolfing, Films, Video, Movie Similarities