From the world's largest Tiffany clock decorating the Forty-second Street entrance to its spectacular main concourse, Grand Central has been a symbol of beauty and innovation in New York City for more than one hundred years. But "the world's loveliest station" is hiding more than just an underground train system. When the body of a young woman is found in the tower suite of the Waldorf Astoria--one of the most prestigious hotels in Manhattan--Assistant DA Alex Cooper and Detectives Mike Chapman and Mercer Wallace find themselves hunting for an elusive killer whose only signature is carving a carefully drawn symbol into his victims' bodies, a symbol that bears a striking resemblance to train tracks.