Bay Winchester is newly married and happy. Things have been quiet since she returned from her honeymoon, which means trouble is just around the corner. When it comes, it takes the form of a despondent man on a bridge. Despite her best efforts, Bay and the hostage negotiator can't save him, and death is swift. That should've been the end of it, but a weird symbol on the dead man's hand piques Bay's interest, and when the negotiator turns up sick with the same symptoms, she know that they have a problem on their hands.