S4, E1: It's J.D.'s (Zach Braff) last week as a resident as he tries to smooth over his relationship with Elliot (Sarah Chalke) after their break-up. The former couple squabble over having to share time with newlyweds Turk (Donald Faison) and Carla (Judy Reyes), who have their own issues when Carla starts to change everything about her new hubby. Professional yet quirky new psychiatrist Dr. Molly Clock (guest star Heather Graham) starts her first day at Sacred Heart turning heads and forging new relationships with the staff. She befriends a lonely Elliot and tries her best to help J.D. and Dr. Cox (John C. McGinley) with a patient offering profound and helpful insight. Meanwhile, when Turk's car blows up, Carla lets him pick out the new ride only to find that instead of a car, he buys a Vespa scooter further proving Carla's point that she needs to always be in control. Neil Flynn and Ken Jenkins also star.