Theorem (1968) runs 1 h 35 min, is rated NR in the US and averages 7.0 from 465 TMDB members. A wealthy Italian household is turned upside down when a handsome stranger arrives, seduces every family member and then disappears. Each has an epiphany of sorts, but none can figure out who the seductive visitor was or why he came.
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Streaming availability by JustWatch. In the US, as of 2026-11-08: Criterion Channel (subscription).
Theorem on TMDB · This product uses the TMDB API but is not endorsed or certified by TMDB.

Lights Down is a free tool: tell it your streaming services and how long you have, and it ranks what you can stream tonight, with a this-or-that, a roll, a bracket and a wheel. Movie data from TMDB; streaming availability by JustWatch. Page updated 2026-11-08. This product uses the TMDB API but is not endorsed or certified by TMDB. Lights Down is a Somebody Decide program. How the data works · Legal & privacy · Tonight's lists