Sarah stays behind in the museum to research Paddington's notes, emailing Edward various texts as well as receiving some from Crowley, both of which reveal more of his past and the Stone. Delving deep beneath Belvedere Castle, he solves various puzzles trailing the Path of Light. Reaching a hidden chamber in the underground temple, Edward meets Hermes Treismajice, one of the alchemists who built Central Park and the holder of the other half of the Stone - rendering him effectively immortal as he waited for the Carrier of the Stone (Edward) to release him. While driving Hermes back to the museum, Sarah is kidnapped by Crowley and held hostage. In a final confrontation, Edward finally kills the mad occultist by quickly shooting him in the head while he was struggling with Flores. Treismajice then leads them to the innermost chamber.