Plot summary
After Sheldon tells his ex-wife about his cancer and she decides to leave him, he begins going to chemotherapy and therapy to help him through the rough time. While he's going to chemo and therapy the search for the missing little girl continues. Sheldon believes that his patient has taken her and fights to get him to confess. He begins bonding with another patient who has breast cancer, Miranda. She doesn't come to chemo one day, convincings Sheldon that she had died. In therapy, his therapist wonders if Sheldon is just convinced that his patient took the little girl, because he wrongfully accused him.
Amelia finds out about Addison's engagement. In therapy Violet tries to get the little girl's parents to continue to pray. After a final therapy session with his patient, Sheldon places him under a 5150 psychiatric hold and goes to his house to find Sarah. After raiding almost the entire house, they're convinced they're wrong, until they find her in the basement, hiding under a bed. Miranda comes back to chemo stating it was car trouble, and Sheldon declares that he wants to be with her, even if her cancer is terminal.
Credits
Adapted from Wikipedia contributors, Private Practice season 6. HTML formatting and reference markers removed.