Ellen convinces the FBI to radically change their approach in the investigation. Meanwhile, Daniel Purcell reenters Patty's life and becomes critical to her case against UNR.

Patty and Tom continue to dig into the Tobin family's sordid past, while Joe Tobin must decide between his family and his integrity. Ellen aids Tom in his investigation of the Tobin's, but in doing so receives some bad news of her own. While locked in the midst of a bitter divorce, Patty and Phil find one piece of common ground in the form of their beloved dog.

Patty drills Louis Tobin about his fraud while his son Joe makes a decision that will determine the fate of the Tobin family forever.

Patty's star witness is arrested, forcing her to strike an unusual deal with the D.A.'s office. Frobisher reveals a little too much about his past.

A whistle-blower case puts Patty and Ellen against each other.