Mercy Black (2019) runs 1 h 27 min, is rated PG-13 in the US and averages 6.0 from 243 TMDB members. A woman is sent to a mental institution after stabbing her classmate in an attempt to conjure an evil spirit called, Mercy Black. Fifteen years later she's released, and must save her nephew, who has become obsessed with the phenomenon.
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Streaming availability by JustWatch. As of 2026-11-05, TMDB lists no streaming option for it in the US.
Mercy Black 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 2026-11-05. 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