Charles Emmett

Derek asks Meredith to work with him in neuro again; Catherine Avery (Debbie Allen) comes back to Seattle Grace and takes an interest in Richard; Cristina becomes increasingly suspicious of Owen; Morgan may be falling for Alex.

Hal is scared when he finds a lump, and feels a new-found love for his family. As Dewey loses the class hamster, Lavernia challenges Francis to a fight. Will he lose to a girl?

While Linc, Sucre, Sara, and Roland follow a Scylla cardholder to Vegas, the others go after T-Bag. Meanwhile, Don confronts Pad Man.

When the Hollywood Reservoir dam breaks, Bobby and the 118 race into action to save passengers on a city bus that has crashed into a building several stories in the air; the team adjusts to life as first responders during the pandemic.

A dying alien transfers himself into Kes' mind in order to execute a political coup on his own planet.

Lori and Brad defend a woman accused of murdering her husband and his mistress while they were in bed together. Alan's life is in danger when he helps a woman whose ex-husband plans to kidnap their children.