With a brazen serial killer on the loose, Noah and Kaely are tested to their limits to catch the murderer before anyone else--including Kaely herself--is killed.
U.S. Marshal Casey Sloane and two other Marshals--including a man from her past--will do whatever it takes to protect their witness and make it out alive.
Following in her absentee father's footsteps in a law enforcement career, U.S. Marshal Mercy Brennan has just recovered from being shot in the line of duty.