Ishana Night Shyamalan's supernatural horror film The Watchers begins as an unsettling mystery before pivoting upon a massive twist, but the character reveal at the movie's core isn't the most shocking twist that plays out in the narrative. The Watchers is based off a 2021 novel of the same name by A.M. Shine, and stays relatively in line with the major story beats of the source material. In both the movie and the novel, a young woman named Mina finds herself lost and subsequently trapped in a massive unmapped forest in Ireland.

Mina finds shelter in a bunker with several strangers, who inform her that the forest is filled with dangerous creatures, the Watchers, that come out at night to observe their behavior. The Watchers' big twist is that Madeline, one of the people in the bunker with Mina, has been a Watcher the entire time. However, while that certainly...