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.

When Caroline and Max join Sophie at the racetrack as guests of Sophie's new bookie boyfriend, Nicky (guest star PETER ONORATI – Rizzoli & Isles), Caroline's reignited love for horse racing gets out of hand.

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.