When historian Christopher Finnegan walks into a new museum in Brooklyn, he's chagrined to learn its curator is his old academic rival, Troy Rafferty. Worse, Troy is convinced the museum is haunted and wants Finn's help learning more about the ghosts. Finn and Troy have never gotten along and Finn wants to run screaming, but then Troy offers him an intriguing proposal: Troy will help Finn with a research project for his overbearing boss if Finn will help Troy solve a mystery involving two men who died in the building under mysterious circumstances in 1878. Finn and Troy piece together the two men's lives-and the quiet romance that grew between them-through diaries, newspaper clippings, and police reports. They're both soon convinced the men were murdered. They're also convinced the ghosts are real-even Finn witnesses paranormal phenomena he can't deny-and that they're capable of affecting thoughts, feelings, and actions. When Finn and Troy start falling for each other despite years of animosity, Finn worries he's being manipulated by the ghosts to stay with Troy and solve the case. Troy is convinced the love between them is real, but he'll need to figure out how to get rid of the ghosts in order to prove it.