Edwin Walker

When Lindsay (Sophia Bush) is tipped off about a grieving father looking to avenge his daughter's death, Olinsky (Elias Koteas) goes undercover as a hitman for hire. With Gang Intelligence lacking enough evidence to arrest the original gangbanger in question, the team works to reinvestigate the case. Meanwhile, Ruzek (Patrick John Flueger) comes back after finishing his undercover assignment only to have Voight (Jason Beghe) knock him down to patrol duty.

When the team heads to New Orleans to track down the con artist (Amy Smart) who is posing as the wife of 'Duke Jacoby,' one of Jack's old CIA aliases, Jack finds himself in jeopardy when 'Duke's' old enemies resurface looking for revenge.