No Man Left Behind (Second Edition)

A former Vietnam soldier, betrayed and left for dead, becomes the focus of a mysterious killer in the present day. Homicide Detectives Iris Williams and Annette Toni uncover a chilling pattern as they investigate a series of bizarre murders concealed in New York City's abandoned subway tunnels. Facing her fears and confronting a cunning serial killer known as The Piggyback Killer, Iris's pursuit will test her resolve and change her life forever.