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Directed by Mercedes Bryce Morgan, the erotic horror-thriller Bone Lake was released on October 3, 2025, following its world premiere at Fantastic Fest on September 21, 2024. The film features Maddie Hasson as Sage, Marco Pigossi as Diego, Alex Roe as Will, and Andra Nechita as Cin, among other cast members.
The story follows Sage and Diego as they set out on a romantic lakeside vacation, only to discover that their private mansion has been double-booked, forcing them to share it with Will and Cin, an unusually provocative and daring pair. Their dream getaway quickly turns into a dark maze of sex, lies, and manipulation, testing the limits of Sage and Diego's already strained relationship.
Disclaimer: This article contains spoilers about the film. Viewer's discretion advised.
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During the conclusion of Bone Lake, it is revealed that Will and Cin are twins and serial killers who prey on weak couples to validate their twisted belief that no relationship is as intense as theirs. The story concludes with a struggle for survival in which united Sage and Diego kill their captors after overcoming their own relationship problems.
Bone Lake ending: How Sage and Diego outwitted the killer twins
Bone Lake opens with Sage (Maddie Hasson) and Diego (Marco Pigossi), a couple attempting a romantic weekend retreat at a secluded lakeside mansion. However, their vacation instantly gets complicated as Diego reveals that he has recently quit his job to pursue writing, shifting the financial burden onto Sage.
This strain in their relationship serves as the weakness that the antagonists exploit, which ultimately becomes the film’s core theme: the battle to save a relationship, both in metaphorical and literal terms. The plot kicks further with the arrival of Will and Cin, another couple who also claim to have booked the property. As the two couples cohabitate within the property, things rapidly devolve into a nightmare maze of desire, deception, and psychological manipulation.
The ending of Bone Lake reveals Will and Cin as the incestuous twins and serial killers who specifically target couples, driven by a perverse desire to prove that only their own deeply bizarre connection is true, viewing all other relationships as lies ready to be destroyed. It is further shown that they keep an eye on their victims using hidden cameras. Their twisted ideology even made them kill their parents when they beat them for the incest.
They also pit Sage and Diego against each other by preying on their insecurities and exposing their lack of genuine communication. Faced with certain death, the couple finally resolves their relationship issues by communicating honestly about their feelings and fears. In the final act, they fake a huge fight to lure their captors into a trap to confront them.
Bone Lake concludes as Sage and Diego desperately execute their plan to save themselves from the twisted twin killers. Sage manages to kill Will to save Diego; however, the battle with Cin becomes quite intense, as they race to escape, Diego desperately cuts off Cin’s fingers and kicks her off the boat, and she further gets chopped off by the propeller of the boat, which Sage pilots.
In the closing scenes, after surviving and triumphing in the horrific battle and declaring their renewed love to each other, Sage accepts the engagement ring that Diego retrieves from Cin's severed finger. The film concludes with the pair sitting silently on the boat, covered in blood, staring off into the distance.
Bone Lake was released on October 3, 2025. Stay tuned for more updates.
