Jack makes a great sacrifice in order to regain his daughter's fading trust; Sydney and Vaughn may have been exposed to a deadly virus in Taiwan.
A high school teacher finds out he has cancer and decides to become a drug dealer.
"Grey's Anatomy's" three-episode story arc continues with a part two that will challenge the interns of Seattle Grace -- and "Grey's" fans as well -- like never before.
Their first aborted drug deal leaves Walt and Jesse to dispose of a pair of corpses, while Skyler suspects that her husband is up to no good.
Tasha goes out drinking with her new co-workers, and one of the managers flashes her; Kelly and Jason have a marriage counseling session that does not go as Kelly expected.