Thirty-year-old fraternal twins Tabby and Sage Winslow own The Book and Candle Shop in Savannah. Sage is hot-headed and impulsive while Tabby is calm and collected, making them the perfect partnership. But when one of their customers is found murdered from a blow to the head, their partnership is put to the test. Blithe McAdam had been seen in a heated argument with shop clerk Gerard, which immediately makes him suspect number one. The twins are convinced of Gerardâs innocence and start digging into Blitheâs past. But no one is cooperating. The neighbor who found the body isnât talking, medical examiner Quig wonât give any details about the autopsy, and nasty rumors begin surfacing about the drowning of Blitheâs father years earlierâevidence that could seal Gerardâs fate. Tabby and Sage dig desperately for the truth, but itâs not only their friend whoâs in peril. With the clock ticking, the twins find themselves in the grip of an unseen and deadly energy that has seeped into their midstâand in the sights of a ruthless killer.