Joe Holt

While rumors of the Chief's departure spread among the hospital staff, Bailey proposes the creation of a free clinic, and a Seattle Grace doctor receives a proposal of a different sort.

The parents of a missing college student seek help; David gets help on the Cytron case from an unexpected source; Mellie proves her political prowess.

Excited about catering the wedding, Sookie pressures Lorelai to set a date, but Lorelai won't commit.

Olivia and her team must do some heavy lifting -- literally -- to clean up the mess after a public figure is caught in a compromising position; Cyrus and Fitz must deal with a foreign-policy emergency.

The team searches for the source of a toxic substance that is released into the public.

Michael must prove Whistler's innocence of an inmate's murder; Michael demands evidence that Sara is alive; Lincoln and Sofia monitor the guards' morning rituals; Mahone gets an offer that may get him out of Sona.