Don, Charlie, and the team take on unknown terrorists who may be using nerve gas to undermine Los Angeles’ water supply.

Tim and Randy disagree on Binford’s environmental policies. Jill gets an internship counseling families.

A boy who was killed in a collision with a train wants Melinda’s help to ensure his mother that his death was not caused by her.

While on his way to court with Maia and a witness, Jay is being arrested by the police. When Diana and Liz rush to help him out, they discover that…

Susan’s days as a sexy internet sensation may be coming to an end after she angers an important client and incurs the wrath of her boss, Maxine; Renee and Gabrielle…

The assassination of an African-American leader leads to the arrest of a man whose ex-wife was suspected of having an affair with the victim.

Aimee-Leigh’s elderly brother Baby Billy returns to the Gemstone ministry, bringing along his much younger wife Tiffany. Jesse closes ranks on his co-conspirators to root out the identity of his…

Neela is still struggling with her decision not to continue becoming a doctor. We discover that Ray is in a band. Kovac and Sam are amoureux, but where does that…

When a volunteer fireman is murdered at an ice rink, Booth and Brennan begin the investigation, but Booth must excuse himself due to a conflict of interest. When details come…

Owen recruits Dr. Teddy Altman, a former Iraqi veteran, as the new cardiothoracic surgeon. Cristina questions her abilities in the E.R. and relationship with Owen. Izzie returns to Seattle Grace…

House uncovers a startling secret when he treats a teenage supermodel for heroin addiction. Meanwhile, Wilson hopes the increased leg pain in House’s leg is an indication his leg nerves…

Mandy’s old memo about Bartlet administration weaknesses surfaces; Josh tries to get administration nominees appointed to the Federal Elections Committee; Sam works to get a better policy on gays in…

An ailing Will opens up to Joyce — with disturbing results. While Hopper digs for the truth, Eleven unearths a surprising discovery.