Jake Borelli

Andy, Sullivan, Dean and Ben are faced with a tough choice while trying to save a couple trapped in a car; Carina's immigration status is called into question.

New doctors continue to shake up the hospital, Meredith bonds with a patient and Jackson struggles with the meaning behind recent experiences. Meanwhile, Jo forms an unexpected alliance.

During presentations at the Innovation Prototypes Day, Arizona shares some cookies that, unbeknown to her, contain a special ingredient.

Alex and Jo go on a road trip to Iowa to find Alex's mum. Meredith gives a presentation on her mini-livers project, which attracts a lot of attention.

The hospital brings in crisis management to help sort out allegations against Harper Avery. Nurse Olivia shows up at Grey Sloan with her son, throwing Alex and Jo for a loop, while Sofia is having a hard time at school.

A sea of patients flood the hospital after gunfire goes off at a parade and a blast from the past throws Maggie off her game on the same day that Meredith tries to talk to her about DeLuca. Owen and Amelia get some potentially life-altering news.