15 Horror Movies You Really Shouldn't Watch Alone

11. Halloween (1978)

John Carpenter's Halloween is the quintessential slasher movie and arguably still the best of the lot, no matter the glut of uninspired sequels and retoolings that followed.

Relying more on gut-wrenching suspense than buckets of gore, Halloween is an intoxicatingly moody horror, bolstered by Carpenter's patient shot selections and iconic musical score, Jamie Lee Curtis' gutsy performance as quintessential scream queen Laurie Strode, and of course, Nick Castle's haunting presence as The Shape himself, Michael Myers.

Screen horror is rarely as intensely unsettling as seeing this phantom-like figure quietly invade suburbia. It's still sublimely chilling four decades later, and will have you peeking around every corner of your house if you decide to watch it alone.