When the paternity of a missing young boy is placed into question, Stabler wonders if he really is the father of Kathy’s child. Later, Stabler faces the possibility of losing…

The CBI investigates the death of a geologist, which Lisbon is convinced is the key to bringing down Tommy Volker.

Jimmy asks a favor of Mike; new complications disrupt Salamancas’ business. Chuck and Jimmy struggle with a compromise.

Walt’s family worries when he doesn’t turn up for Walter, Jr.’s 16th birthday. Jesse is forced to put his lab skills to the test without Mr. White’s help.

Skyler develops an unusual solution to her money troubles. Hank enlists Walt to investigate a theory. Walt’s impatience with Jesse grows.