A lion is found roaming Seattle, and Mark considers taking the next step with Julia.
A lion breaks loose in Seattle, leaving a couple's lives and relationship at risk.
Lexie overhears Mark's discussion about moving in with Julia.
Teddy begins to take steps towards coming to terms with Henry's death.
Callie grills Arizona on her past lovers.
Alex requests to be taken off Morgan's preemie case when she becomes too dependent on him.
Meanwhile, Meredith tries to be a support for Cristina as the tension between her and Owen hits a boiling point.
Written by Stacy McKee
Directed by Mark Jackson