Peter Jay Fernandez

A killer leaves an envelope of cash on his victims; Holmes makes a gesture toward Watson as she deals with a personal crisis.

Olivia's sister, Rachel (Ari Graynor), visits; Walter, Peter and Olivia try to solve the murder of an esteemed epidemiologist, which may be linked to Olivia's abduction.

Alicia, Diane and Will must regroup when they're caught off-guard by a brilliant disabled attorney, Louis Canning (Michael J. Fox), who uses his condition to sway a jury during a test case for a huge class action suit against a pharmaceutical company. Meanwhile, Peter's campaign is at a loss as to what to do with rising star Wendy Scott-Carr, and Kalinda reaches out to a former friend, Donna Seabrook, to tell her to stop spilling her secrets to Blake.

Gordon and Bullock set out to stop Gerald Crane, a biology teacher who has been harvesting the glands of his murder victims. Meanwhile, after finding herself in an unusual setting, Mooney continues plotting to gain power, and Falcone attempts to change Maroni's plan for the Penguin. Then, Bruce takes a treacherous hike.