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.

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.

Lincoln and the team go to Las Vegas where Sucre gets an indecent proposal; Sarah finds out about Michael's condition; Roland pushes his luck; T-Bag and Gretchen team up; the secrets in Whistler's bird book are revealed.

Brad and Lori defend a woman accused of killing her husband and his mistress when she catches them in the act; Shore finds himself in danger when he helps a woman whose ex-husband kidnapped their children and took them to Peru.