Suspense is not the same as surprise
In his long conversations with François Truffaut, Alfred Hitchcock described a simple scene: two people talking at a table. If a bomb suddenly explodes beneath it, the audience gets a few seconds of surprise. If the audience is shown the bomb first, and the clock ticking, the same ordinary conversation becomes unbearable. That is suspense, and it is the thriller's native language.
This is the clearest line between our two main genres. A mystery withholds information and invites you to find it. A thriller often gives you information and makes you live with it. Many great films do both, but knowing which pull is stronger tells you what kind of evening you are in for.
What makes a thriller psychological
In a psychological thriller the danger is at least partly internal. Perception is unreliable, memory is negotiable, and the person we follow may be the least trustworthy witness in the story. The camera becomes complicit: it shows us what the character sees, and we must decide how much of that to believe.
That instability is exactly why these films are so easy to spoil. A single sentence describing the "kind" of film it is can collapse the whole effect. So on this page we limit ourselves to setting, mood, pace and how much interpretive work the film asks of you.
A thriller shows you the bomb under the table, then makes you sit through the conversation.
Recommended thrillers
Rebecca (1940)
Tension 3/5Complexity 3/5Spoiler-freeBased on Daphne du Maurier's novel. A new wife arrives at Manderley and finds every room still belongs to someone else. Ideal for viewers who like dread to accumulate politely.
Vertigo (1958)
Tension 3/5Complexity 4/5Spoiler-freeA retired San Francisco detective is hired to follow a woman. The pace is dreamlike and deliberate; the film rewards patience more than any other on this list.
The Talented Mr. Ripley (1999)
Tension 4/5Complexity 3/5Spoiler-freeSun-soaked Italy, jazz clubs and a young man who wants a different life. You will find yourself rooting for the wrong outcome, and noticing it.
Caché (2005)
Tension 4/5Complexity 5/5Spoiler-freeA Paris couple receives tapes of their own front door. Long static shots make you search the frame like a security guard. Leaves questions on purpose.
Black Swan (2010)
Tension 5/5Complexity 3/5Spoiler-freeA ballerina rehearses the role of her career. Intense and physical; contains disturbing imagery, so pick your moment.
Prisoners (2013)
Tension 5/5Complexity 4/5Spoiler-freeTwo girls go missing on Thanksgiving in Pennsylvania. Half thriller, half detective story, with a methodical investigator at its core. Long and harrowing.
Gone Girl (2014)
Tension 4/5Complexity 4/5Spoiler-freeA wife disappears on an anniversary morning and the media arrives before the facts. Avoid all trailers and plot descriptions if you can.
Burning (2018)
Tension 3/5Complexity 5/5Spoiler-freeAdapted from a Haruki Murakami story. Quiet, sunlit and slowly destabilising — a thriller that never tells you which genre it is.
Choosing your level of intensity
Our tension badge measures how hard a film holds you, from a low hum (1) to sustained grip (5). Complexity measures interpretive effort: a 5 means the film leaves real ambiguity and you will likely want to discuss it afterwards. If you want a tense night that resolves cleanly, look for high tension with complexity around 3. If you enjoy debating meaning, choose the opposite.
When the credits roll and you need to compare notes, visit Endings. Every explanation there is locked behind a panel labelled with the film's name, so you only ever open the one you have seen.