Christopher Carrington

While Missy unknowingly becomes Sheldon’s test subject, Georgie joins Mary’s bible study to spend more time with his crush, Violet (guest star ISABEL MAY).

The chief makes a decision that shocks everyone at Seattle Grace; Owen and Cristina attempt to find normalcy; April struggles in her new role; the 5th-year residents receive their first solo surgery assignments.

The NCIS team links a bizarre crime scene at Arlington National Cemetery to a string of attacks on homeless veterans. Also, Vance orders McGee, Bishop and Torres to complete hours of evidence garage cleanup duty for withholding information.

To celebrate their one-year anniversary, Eddie reluctantly agrees to take Alison to the see a modern remake of Romeo and Juliet. But when Louis and Alison’s dad bond over their love of Shakespeare and crash their date, Alison wonders if she and Eddie’s relationship has lost its spark. Meanwhile, Jessica gets called for jury duty and campaigns to be the “Jury Boss,” and Emery and Evan struggle with the responsibilities of raising a Tamagotchi digital pet.

When ballistics tie a recent murder case of Rush's to a serial killer who was seemingly inactive for 27 years, Diane Yates, a tough, no-nonsense FBI agent who was responsible for the end of Stillman's marriage, shows up to enlist the team's aid in finding the killer who has eluded her for 30 years.