When a bride is shot by a sniper during her wedding ceremony, Jack and Beth are called in to determine if her stalker has come back to haunt her.

After a series of alarming occurrences befall a wealthy philanthropist, the TAU investigates her beleaguered ex-husband and his much younger girlfriend. Amanda threatens to reveal Jack’s dark past.

When a man's quiet suburban neighborhood and home are vandalized and his family is terrorized, he is forced to reveal his nefarious past to secure protection from the Threat Assessment Unit.

When a mysterious stalker targets a lifeguard (Phoebe Tonkin) and her loved ones, Beth and Jack race to diffuse the threat.

Series Finale - Beth, Jack, Vicky and the rest of the TAU team continue their search for a serial killer, and Vicky learns some startling information about her ex-husband.