Dark Waters

A young woman named Elizabeth arrives at an island convent amid a heavy rainstorm. Her father has recently died, leaving her an orphan, and she has returned to decide whether to continue his donations. The bleak weather and the remote setting immediately hint at secrets lurking within the convent.

Elizabeth meets the blind Mother Superior who rules the house. Instead of a former friend, she is guided by an innocent-looking novice named Sarah. The initial dynamic hints at hidden histories beneath the quiet surface of the convent.

Elizabeth tells Sarah that she was born on the island and lived there until she was seven. She explains that her mother died giving birth, shaping her return and questions about her heritage. The confession deepens the mystery surrounding her lineage.

The two women explore a decaying library within the convent, studying an illustration of a demon and a painting showing two young girls with a pagan amulet. The artifacts hint at a past tied to Elizabeth's family and the island's secrets. The setting already feels charged with hidden histories.

Elizabeth is attacked by a nun during their exploration. The attacker dies by falling out a window, leaving Elizabeth shaken and more distrustful of the convent's safety. The violent incident foreshadows the darker forces at work.

Elizabeth finds an entrance into a labyrinth of catacombs beneath the convent. A procession of nuns carries a bloody corpse wrapped in a sheet, revealing macabre rituals tied to the island. The discovery deepens the sense that Elizabeth's fate is entwined with the convent's dark legacy.

In a pit-like chamber, a blind painter covers the walls with enigmatic images. Elizabeth recognizes one of the faces as her missing friend, hinting at familial connections and the demon mother. This revelation suggests the past she thought lost is closer than she realized.

The following day Elizabeth begins to distrust Sarah as she experiences strange dreams and visions. The sanctuary of the convent starts to feel unstable as hidden truths surface. The shadows of their intertwined fates grow stronger.

Elizabeth visits the old caregiver from her childhood home to piece together her past. Their reunion is interrupted when the nuns set the house on fire, forcing Elizabeth to flee. The blaze transforms a personal memory into a symbol of the convent's reach.

Back at the convent, dead and dying nuns are scattered through the halls. In the catacombs, Sarah reveals her true nature as Elizabeth's sister, more demon than human, and that their demon mother still seeks release. The revelation shifts the threat from external to familial.

Elizabeth and Sarah attempt the ritual they performed as children. The nun outside places the shattered amulet fragments on the ground, and the drops of blood begin to restore the amulet. The demon mother stirs, threatening to break free from her crypt.

Afraid, Elizabeth throws the amulet down, and it shatters into pieces once more. Sarah moves toward the demon mother as the ritual's balance collapses. The fragile hold on the ritual proves insufficient to seal the demon mother.

Sarah advances toward the demon mother to protect Elizabeth, drawing the attention of the looming danger. Elizabeth manages to escape the catacombs and the immediate threat. The sisters' fates diverge as the ritual falters.

Elizabeth survives and returns to the convent, wearing a necklace made from the central fragment of the amulet. Her eyes have clouded with cataracts, mirroring the blind Mother Superior. The ending suggests she has inherited the mother's role and the island's dark legacy.