Violet is taking part in a grief therapy group. In addition to dealing with a move out of her old house, she's been fielding difficult questions from Lucas. He wants to see his daddy. At work, Violet has a patient named Adam who has anger issues. She believes that guilt may be a trigger for him. This theory picks up steam once Adam admits he shot someone 11 years ago. He was 18 and it was a botched robbery. Adam didn't stick around long enough to find out what happened to his victim.
Violet asks for Sheldon's advice regarding her patient. She's told to NOT dig into the case. If she does, she won't be able to do her job effectively. As you may have guessed, Violet digs anyway. She discovers that the guy Adam shot was a husband and father of two. She also learns he didn't survive. Violet now has trouble looking at Adam the same way. She needs to walk away from this patient.
Sam is reluctant to give Stephanie the 411 on his past. Addison is also being evasive with Jake, who knows she's been crying behind closed doors. She feels like she's cheating on her new love because she can't stop falling apart over her past love, Mark Sloan. As for Sam, he gets testy with Stephanie when she jokes about the fact that she doesn't know anything about him.