Livid

Lucy finds Anna covered by a white sheet on a pedestal, appearing as a mannequin-like corpse dressed in a ballerina outfit. The mansion's atmosphere and the eerie music box spinning effect make Lucy believe she's discovered the girl's dead body. However, Anna is actually alive, Mrs. Jessel has kept her in this suspended state through vampiric means, and Anna emerges later to attack Lucy.

The rumor about hidden treasure serves as a lure to draw curious teenagers into the mansion's trap.

A flashback reveals that Jessel was a ballet teacher who discovered Anna hovering over a dead girl in her room, drinking the girl's blood. This suggests Anna was turned into a vampire, and Jessel either became one herself or was already a vampire who turned Anna. The flashback shows Jessel covering up the death, implying they've been vampires for a long time, living in the mansion and preying on young girls associated with Jessel's ballet classes.

The mansion is filled with stuffed animals collected from Jessel's past victims.

Ben wanders into an operating room where veiled ballerinas kill him. He then rises as a vampire, just like Anna. When Ben encounters William, his vampiric nature takes over and he attacks his own brother. This mirrors Anna's transformation, she also became violent and tried to drink Lucy's blood after being awakened from her corpse-like state.

The mansion traps all three intruders, suggesting none will escape unchanged.

Mrs. Jessel implants moth pupae into the throats of both Lucy and Anna as a soul exchange ritual. This supernatural procedure transfers Anna's soul into Lucy's body and Lucy's soul into Anna's body. Jessel believes this will give her control over Anna by placing her in a new, younger body. The ritual represents the film's central body horror element, a supernatural exchange of identities.

The locked room with Anna's preserved body was always intended for this ritual.

Mrs. Wilson is revealed to be complicit in Jessel's vampire scheme, likely having been turned or controlled by her. She sedates Lucy after Anna's attack and assists with the soul exchange ritual, holding Lucy down while Jessel implants the moth pupae. Wilson's role as a mentor nurse was likely a setup to bring potential victims or suitable bodies to the mansion.

Wilson takes Lucy to the mansion specifically and shows knowledge of Jessel's secrets from the start.

The moth pupae ritual performed by Jessel successfully swaps their souls. Anna wakes up in Lucy's body with changed eye color, while Lucy awakens in Anna's body. When Lucy and Anna push Jessel off the balcony and escape together, they have switched bodies. This is confirmed in the final scene where Lucy (now in Anna's body) looks at her reflection and sees Anna's face, while Anna inhabits Lucy's original body.

Jessel's flashblack shows she's done this before, keeping bodies fresh for soul transfers.

When Lucy (now in Anna's body) stands on the cliff edge, she levitates into the sky, suggesting that Anna's vampire nature has merged with Lucy's consciousness. The scars Lucy received throughout the film fade and vanish as she ascends, indicating her human weaknesses are being replaced by vampiric powers. This ending implies Lucy has become fully vampire, escaping as Anna once did, while Anna remains trapped in Lucy's human body on the ground.

Anna was shown hovering over the dead girl in the flashback, vampires can levitate.

When Anna awakens in Lucy's body after the ritual, her eyes have a different color, this visually confirms the body swap occurred. The changed eye color signals that Anna now inhabits Lucy's body but retains some of her original vampire essence. It's a visual marker for the viewer that the supernatural transfer was successful.

The ritual itself involves moth pupae implantation, a supernatural transformation process.

Jessel's goal is to continue her vampiric existence by transferring her consciousness into a younger body. By forcing the soul exchange, she attempts to inhabit Anna's body while Anna's soul is trapped in Lucy's body. This would allow Jessel to live on through her daughter's body, maintaining her immortality. However, the plan fails when Anna rejects the control and turns against her mother.

Jessel keeps Anna preserved in the mansion specifically for this purpose, suggesting she's attempted body theft before.

The mansion itself operates as a supernatural entity that traps its victims. After Lucy and the others discover the locked room, the window they entered through becomes secured with iron bars, this is the mansion's defense mechanism preventing escape. The house aligns with Jessel's vampiric needs, literally caging the intruders like the specimens in Jessel's collection.

The mansion is described as a place thick with shadows and filled with preserved stuffed animals, it's a predator.

The veiled ballerinas serve as the mansion's enforcers, similar to zombie servants in vampire lore. They appear to eliminate threats or intruders who wander into forbidden areas. Ben encountered them in a doorless room, making it impossible to escape. Their killing of Ben and subsequent transformation into a vampire aligns with Jessel's need to create more vampires or servants.

The mansion contains many stuffed animals, suggesting a history of victim collection.

William is attacked by Ben, who has already been turned into a vampire. In self-defense, Will stabs Ben with scissors, but Mrs. Jessel then intervenes and kills Will. His death demonstrates the corruption of the mansion, Ben, his own brother, becomes his attacker, and the vampires systematically eliminate the trio.

The treasure hunt pact was always doomed; the mansion lures victims with tempting secrets.