In the quiet town of Ravenswood, a renowned private investigator is found brutally murdered. His protégé, Cassie, takes on the case, determined to uncover the truth behind his death. As she delves deeper into the investigation, she is forced into a dangerous alliance with the killer, who will stop at nothing to keep the town's secrets buried. With her mentor's reputation on the line and the lives of innocent people at stake, Cassie must navigate the treacherous web of lies and uncover the grisly truth behind the town's seemingly idyllic façade. Will she be able to bring justice to the victims and clear her mentor's name, or will she become the killer's next victim?

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Some movies that have similar genres and were produced around the same time as Cult Killer include Shattered, Infinity Pool, Goodnight Mommy, The Pale Blue Eye, Coming Home in the Dark, Broadcast Signal Intrusion.

Cult Killer was released in theaters on January 19, 2024.