Cantrell Harris

While Meredith faces the repercussions of messing with the medical trial, April tries to step up as chief resident; Cristina and Owen disagree.

Indecent proposal - Keri Russell Guest Stars - When Eliot's (Sarah Chalke) engagement ring doesn't fit, Keith (Travis Schuldt) agrees to a "redo" in which the particular Doctor plans her own engagement. Carla (Judy Reyes), Jordan (Christa Miller) and Eliot's sorority sister Melody (guest star Keri Russell) gather to help plan the "surprise." Meanwhile, the men of Sacred Heart are suffering from too much talk and not enough action as J.D. (Zach Braff) continually gets shot down by Melody, Turk (Donald Faison) and Carla have not been intimate since their baby was born and Dr. Kelso's (Ken Jenkins) internet is down --resulting in a lot of cold showers. In the end J.D. realizes that he might still have feelings for Eliot. John C. McGinley and Neil Flynn also star.

Suspicion turns to paranoia when the team doesn't know who can be trusted as more LMDs infiltrate S.H.I.E.L.D.

The doctors find their own lives in danger when they arrive at the scene of a massive multi-vehicle accident on a highway covered in thick fog. Also, Jesse’s confidence is shaken following his heart attack, while Carla’s condition becomes critical.