Edwin Kho

Sheldon battles President Hagemeyer’s mysterious boss over the University’s science requirements. Meanwhile, Mary discovers that Georgie is working at Meemaw’s illegal gambling room.

After Christa saves a woman's life, she pleads with Neal to perform a surgery that will ensure the patient's reproductive future. Also, Mario gets into a fight with a patient after he delivers a diagnosis that could imperil the man’s hockey career.

The Angels Memorial doctors treat victims caught in a landslide, and a group of children come in from a camping trip with measles putting the entire ER at risk.

Peter (Milo Ventimiglia) faces unexpected consequences for his heroic acts and encounters a reluctant new hero (guest star Deanne Bray). As Claire (Hayden Panettiere) continues to adjust to college life, she must figure out how to deal with her ability having been revealed. Meanwhile, Samuel (Robert Knepper) moves heaven and earth to recapture the memories of his late brother Joseph. Elsewhere, Matt (Greg Grunberg) struggles with his internal demons as Sylar (Zachary Quinto) mysteriously resurfaces. Jack Coleman also stars. Assaf Cohen and Rick Worthy also guest star.