A silver locket said to have belonged to Joan of Arc and a children's nursery rhyme... A 600-year-old monkey with an attitude and a mysterious supernatural symbol on a Caller ID box... A deadly plague reemerging in the seaside town of New Salem, Maine, and the manifestation of a little girl's ghost... How do these tie in with the sudden disappearance of Chloe's fianc , Detective Sergeant Arlo Grimm, while on a routine search for a lead to her twin...