Private Practice: Season 4, Episode 18

4 - 18: The Hardest Part

When Pete's brother, Adam (Kyle Secor), brings their sick mother (Louise Fletcher) for a consult, Pete discovers her illness may be his brother's fault. Meanwhile, in the wake of her book's success, Violet walks in on Sheldon just as he's about to take her archenemy on a date, and Cooper treats a young musical prodigy whose brain tumor could prevent him from ever playing the piano again.