Vedette Lim

Dr. Murphy, Dr. Reznick and Dr. Lim treat a woman who has autism and a delicate brain condition; Lea and Shaun work to figure out their friendship and roommate status.

George O'Malley's mother comes to Seattle Grace for help after another hospital botches her surgery; a medical miracle inspires the residents; Jackson's suspicions about Mark and Lexie interfere with work.

A fire at a boarding school shakes up Lt. Severide; Lt. Casey tries to help Dawson; Mills looks into his father's past.

Tori is asked to enroll at an elite performing arts high school.

Walter finally learns Cabe's long-kept secret regarding the Baghdad mission, and it threatens to tear Team Scorpion apart forever. Also, Paige's world is rocked when Ralph puts his life in danger to help the team.

A call to the field may throw a wrench in Dawson's plan to retake the firefighter exam; the firehouse welcomes a new addition; Boden makes a bold move.