In "Shiny Happy People", an elderly patient admitted into the E.R. for a heart condition sees a familiar face. Karev treats a troubled teenage patient, Hayley (guest star Demi Lovato). Meredith tells Cristina her suspicions regarding Owen. Read our full recap below!
We're off to the alternate universe on Fringe, as the team travels there in this first-half of the two-part season finale. On "Over There", Walter and Olivia are on a mission to save Peter and our world.