Joel Bissonnette

Patrick Jane suspects the only surviving member of a National Guard unit of murdering his friends and goes undercover to prove it.

Meg's humiliation drives her from her social circle when the scores from a "purity test" become public, and Veronica sets out to find the person responsible for the leak.

The CIA recruits House to help an agent dying of an unknown illness; Foreman faces resistance from the remaining fellowship candidates when they question his judgment.

A serial rapist sends a letter to the squad announcing his return to Philadelphia after five years and his plan to strike again.

Sydney's life hangs in the balance when Gordon Dean discovers that Rachel -- aka Mockingbird -- is still alive. Meanwhile, Sloane awaits the outcome of his sentencing. Amy Acker ("Angel") guest stars.

Sydney and Tom discover that Renée has stolen the cryogenic-type container, and they find themselves under siege by mercenaries who want the container's contents. Meanwhile, Sloane is forced to take matters into his own possibly devious hands to get himself reinstated into APO and to continue his quest to find a cure for daughter Nadia.