Michael Gambino

Lydia returns to the Hamptons determined to carry out her vendetta against Emily and the Graysons. Meanwhile, Victoria suffers lingering guilt over her involvement in David Clarke's imprisonment and death.

When a P.D. informant is murdered, the team digs in to track down the perpetrator only to learn a shocking truth; Voight and Ruzek strategize to help Burgess.

A soldier renowned for his tracking abilities suffers brain damage from a bomb blast while serving in Iraq, but when he recovers, discovers he has gained rare skills that enable him to find people or objects the authorities cannot. However, the incident has left him with eccentricities that make him difficult to work with, so he relies on support from his legal advisor and friend Leo Knox while working on cases.

When Nick finds out that Lisa has taken KiKi to Maryland on his weekend with her, he borrows the Darlings' jet to go and get her back. However, he is joined on the flight by Karen and Brian: Karen is on her way to a sperm bank, while Brian has planned a secret romantic rendezvous with his ex-wife. Meanwhile, Tripp asks Patrick to try to reverse Congressman Charles Whatley's standing against Simon Elder's bio-fuel.