Marika Dominczyk

Richard, Jackson, April and Catherine tackle a tough trauma case intensified by hospital politics; Amelia finally faces her feelings about Owen; Meredith gets caught between Nathan and Alex over a patient.

Maggie gets a surprise visit from her mother at the hospital. Bailey has to make a difficult decision when one of the attendings refuses to work with Eliza, and Stephanie gets caught up in Owen and Amelia's personal drama.

Alex returns to the hospital and discovers a lot has changed since he left. Meanwhile, Jo has to make a difficult decision on a case, and Arizona tries to distance herself from Eliza.

The hospital reels from the effects of the explosion as the doctors scramble to relocate patients. Stephanie and a young girl, Erin, are forgotten about amidst the chaos, trapped in a burning room.

The residents are excited for Eliza’s next phase of teaching, but they spend the day caught between the warring attendings. Meanwhile, April has a challenging first day in her new role at the hospital.

Richard and the attendings set out to make Eliza's first day at Grey Sloan a bumpy one. Meanwhile, Meredith tries to track down Alex.