Addison settles into her new life after making a decision between Jake and Sam; Violet fears the worst when Pete doesn't show up to his preliminary court hearing; and Charlotte swears Cooper to secrecy when she receives shocking news. Meanwhile, Amelia celebrates one year of sobriety and Sheldon rekindles a romance with his ex-wife.

A celebration and some reminiscing about the past brings everyone together at Addison's house. Sheldon has a suicidal patient with a shocking confession.

Violet is having trouble moving on now that Pete isn't around, but it's a patient's disturbing admission that has her turning to Sheldon. Addison does her best to hide her anguish from the others. Cooper and Charlotte become accustomed to their new daily lives while Sheldon and Sam have a face to face.

Sheldon becomes worried when a little girl goes missing from the hospital emergency room. Jake and Addison have differing views about a patient. Saint Ambrose Hospital gets a new doctor. Sam faces questions from Stephanie about his past relationship with Addison.

The search continues for the missing girl. Sam's new career in reality television puts the light on some of his colleagues' personal lives. Sam's mother needs his help when her boss gets sick.

Addison gets a surprise when Henry's biological mother shows up and wants to be involved in his life. Addison links up again with her mentor.

Upon hearing that he must meet with Henry's social worker during a home visit, Jake fears that an incident in his past will come to light. Meanwhile, Addison becomes skeptical of Jake's needy patient and James continues to pursue Amelia.

In an episode told from Cooper's point of view, we follow him from the moment of conception through a nasty fight with Charlotte, which inadvertently threatens the lives of their triplets. Meanwhile, Violet comforts a friend who is being advised to take her partner off life-support.

During a dark moment in his life, Sheldon finds happiness with a new woman. Meanwhile, he becomes increasingly suspicious about his patient Nick's involvement in Sarah's disappearance.

Charlotte stresses the doctors out when she continues to run Saint Ambrose Hospital from her doctor-ordered bed rest. Meanwhile, scared that Charlotte might never leave the hospital, Mason begins acting out in school.

Amelia, now sober for more than a year and on the mend emotionally, goes on a series of disastrous blind dates set up by the other doctors at the practice. After vowing to be alone indefinitely, she teams up with James on a medical procedure, which leads to dinner - and the dinner leads to something completely unexpected.

Addison attends Henry's court date and realizes that the judge still has some concerns about Jake's past, Sheldon introduces Miranda to his friends, and Cooper's efforts to secure a dream house are put on hold when Charlotte goes into labor.

Naomi returns to stand by Addison's side on her wedding day, Cooper struggles with the hardships of being a stay-at-home father, and Violet begins a new project close to her heart.