On Thursday's all-new Grey's Anatomy, Alex treats a troubled teenage patient Hayley (guest star Demi Lovato), whose parents bring her in for severe schizophrenia (see sneak peek).
Meanwhile, an elderly patient admitted for a heart condition sees a familiar face, a long lost love (guest star Marion Ross) who happens to be in the E.R. as well for a fractured arm.
Meredith can't help but tell Cristina about her growing suspicions of Owen, which inevitably messes with Cristina's head, and tension continues to build around Owen and Teddy.
Click to enlarge Grey's Anatomy pictures from "Shiny Happy People" ...