The Inheritance

Billionaire Charles Abernathy invites his estranged adult children—twins C.J. and Madeline, Drew and his wife Hannah, and Kami—home for his birthday. Head of security Miles leads them to their father, who reveals he will be killed at midnight, instructing his security detail to leave him alone. He asks his children to protect him, promising equal inheritance if they succeed. He has enhanced the estate with advanced security systems and sealed doors to prepare. Charles tells Hannah to leave, but she refuses. While the children and Hannah stay that night, Kami wanders into the cellar but gets scared by a strange growl and leaves. Before she can swim in the indoor pool, she's killed by an unseen attacker. Meanwhile, Madeline and C.J. scheme to take Charles' wealth without the other children until Drew and Hannah inform them Kami is missing. They find her body and tell Charles. Despite feeling sympathy, Charles refuses to open the doors, revealing the killer is a demon he dealt with years ago, now coming to collect a debt. After Kami's death, Charles changes the will, ensuring Hannah receives Kami's wealth as she remained. Tensions rise among his children when the twins accuse Drew and Hannah of targeting Kami to claim the wealth. However, the conflict subsides once they discover Kami's body missing from the pool. Hannah wants to leave the estate and attempts to break the glass unsuccessfully. Drew suggests using an elevator instead of the main entrance in the antique room. They enter the antique room, but Hannah cannot squeeze through the elevator gates due to an unseen force. Spotting a demon, Hannah and Drew flee upstairs. After escaping, the twins locked Drew and Hannah in a vault, planning to kill them and take over the estate. The demon drags Madeline into another room, taking the form of Kami. C.J. bursts in and accidentally shoots Madeline, killing her. He then frees Drew and Hannah to confront his father, while the demon turns off all the power in the house.