When a serial killer crashes Detective Michael Bennett's wedding, he and his new partner uncover a gruesome string of cold-case homicides across the country.​Weeks before NYPD Detective Michael Bennett is to marry his longtime love, Mary Catherine, an assassin announces his presence in the city with a string of grisly murders. Each victim is a young woman. And each has been killed in a manner as precise as it was gruesome.Tasked with working alongside the FBI, Bennett and his