Jake, Devon, and Lexy infiltrate a Halloween ball to stop Chucky… but the demon doll has other plans.

Diane returns to help with Crisis One intervention training for Station 19 and Station 23 firefighters. Meanwhile, Andy and Sullivan continue to be at odds, and Jack helps a young…

As Rebecca contemplates her feelings about her career, Paula is forced to deal with a big client. Josh tries to get back in the dating game, while Heather and Hector…

Richard performs a monumental surgery in his career; Derek and Lexie attempt to work miracles for a patient with an inoperable tumor