Devil in the Lake (2022)

Plot

Bo Young takes a caregiving position in the opulent mansion of her wealthy grandmother, Wang, but her motives are far from pure. Mother Kim, Wang's only living relative who hired Bo Young, imposes strict rules: no visitors, especially children, and a clear prohibition against approaching the nearby reservoir. Strange and unsettling occurrences plague the large estate adjacent to Gwimot Reservoir, where a series of mysterious deaths have transpired. As Bo Young delves deeper into the mansion's secrets, she uncovers the dark history surrounding the foreign guests who met their untimely fates there.