<P> Once there, Ronan learns that the Bell Killer attacked the building, crushing Iris to death, and slaughtering several people who stood in his way . Although Joy is safe, she is re-arrested and taken away by Ronan's brother - in - law Rex, the lead detective on the Bell Killer case . Investigating the church, Ronan realizes that the Bell Killer is hiding in the derelict Judgment House . There, Ronan discovers evidence of the Bell Killer's activities and clues implying that the killings have been occurring for hundreds of years . </P> <P> Ronan discovers Baxter's corpse . Baxter's ghost reveals he was murdered by the Bell Killer while secretly still investigating the case following his demotion . He also clarifies that he'd been working with Cassandra and she's still alive . In the basement, flashbacks reveal that Abigail had been imprisoned there before she was hanged . Her execution came as punishment for accusing several innocent people of witchcraft, resulting in their deaths . In anger, Abigail drew a bell symbol on the floor, swearing that she will never stop until the bell tolls for all of the witches in Salem . She believed they made a contract with demons to gain inhuman powers . </P> <P> Following the evidence, Ronan returns to the museum to discover that Rex is the Bell Killer, having been possessed by Abigail . As he prepares to hang Joy, Ronan manages to force Abigail's spirit out of Rex, and the pair battle by inflicting painful memories on each other . These memories reveal that Abigail has possessed many people to carry out the Bell Killer murders before killing the possessed themselves . Among the possessed are Baxter, who she used to kill Rose, and Ronan, who killed Sophia . </P> <P> Abigail summons a portal of demons to swallow Ronan . He escapes its pull and forces Abigail in . She submerges and the portal fades . </P>

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