When Claire takes Manny and Luke along to Alex's academic decathlon for the weekend, Phil attempts to throw together a boys' night at the house, inviting a fellow Bulldog alum he just met.
Unsettling news motivates Derek and Meredith to take preventive steps for their children's future; Syrian doctors come to the hospital for a crash course in basic surgical skills; April decides to tell Matthew the truth.
After several of Bailey's patients die, she becomes the focus of a CDC investigation; Cristina teases Alex about his feelings for Jo; Owen continues to take care of Ethan while his parents remain in the hospital.
The granddaughter of a 1962 suicide victim provides evidence to the team that the suicide note was not written in her grandmother's handwriting.
A nurse is haunted by the ghost of a former patient who accuses her of murdering him. Melinda gets them to communicate to find out what really happened.