Bloody Mary was the creation of novelist Hannah Ryan (also played by Ray), who (after being dumped by her publisher, Phillip Radcliffe) began work on her novel, Bloody Mary Chronicles, which featured Bloody Mary as the killer. Early in the film, Hannah was shown in her apartment talking with Phillip, who offered her a deal to ghostwrite his company's next novel. After reluctantly agreeing with his deal, Hannah made Phillip a Bloody Mary in her kitchen, where she grabbed a knife and killed Phillip. It was at that moment that Hannah suddenly appeared and approached her doppelgänger, who was revealed as none other than Bloody Mary herself. The imaginary villainess later gave Hannah the knife as a "souvenir," and following this, the image of the murder (including Mary's bloody knife) disappeared, as it was revealed to be in Hannah's mind as inspiration for her novel's chapters.
Heel TurnEditMary resurfaced later in the film and killed Julia in another imagined scene, which Hannah used to write a second chapter. All the while, Mary gave an evil smirk as she looked at Hannah, hinting a possible heel turn towards her creator. Later on, Hannah returned home from visiting her publishing partner, Darby, at the hospital, after Darby was attacked by a killer who had been copying the murders in Hannah's novel. At that moment, Mary turned heel and attacked Hannah, and later went after her with a knife from the kitchen, all while wearing a disguise that consisted of a mask and a hoodie.
The masked villainess continued assaulting Hannah, smashing her face on a glass table before the novelist knocked the knife from Mary's possession. However, the evil Mary retrieved the weapon and then killed "Hannah," proceeding to remove her mask and also ominously glare at the real Hannah, who used the scene to write another chapter of Bloody Mary Chronicles. While discussing her novel at the end of the film, Hannah does not reveal Bloody Mary's ultimate fate.