When the team splits up to question a suspect's father, Simone and Laura discover critical information on how their abusive relationship is connected to the crimes. Following this lead, the team heads to Tucson to save the suspect's newest target. Meanwhile, sparks fly with Laura and her former colleague, Mark Atlas, as they debate the killer's motive.

When Simone and Carter go undercover to find an international assassin known as The Reaper, a prisoner seeking bail recognizes Carter and nearly blows his cover. Laura and Brendon trace a lead on The Reaper's assault rifle while Brendon works to heal his relationship with his father. Meanwhile, Simone's demanding work schedule puts a strain on her relationship with Dina.