Tom Murphy, a veteran of the famed New York Irish Brigade, is now the sheriff of Murdock, Texas. Haunted by ghosts of the past, Murphy has managed to build a decent life for himself and his family. But that life is threatened when the Texas Rangers ask him to carry out the clandestine execution of a beautiful young prostitute convicted of murder. The woman harbors a deadly secret. Murphy is forced to confront a spectre from his own past.