The best psychological horror movies are the ones that feel almost impossible to talk about with anyone who hasn’t seen them. You want to gush about the brilliance of it all — the tension, the performances, the twist — but you don’t want to give anything away. You want to talk about that ending, yet even hinting that there is a twist feels like a spoiler already.

This article is part of Trick or Stream, a seasonal series where Tom's Guide writers share their favorite horror movies and thrillers.

That’s exactly how it is with "Triangle," a 2009 psychological horror film set on the open seas. Written and directed by Christopher Smith and starring Melissa George, the movie takes viewers on a bizarre, disorienting voyage aboard an abandoned ocean liner discovered by a group of friends forced

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