Plot summary
Addison starts IVF treatments with Jake and decides that she isn't going to tell Sam until she's pregnant. Amelia's friend, Michelle, comes back from Italy, and asks Amelia to help her commit suicide. Sam and Violet work on an old patient of Violet's who hears voices and has stopped taking his medication. Pete and Sheldon try to talk Amelia out of helping Michelle commit suicide. Violet agrees to not see her patient in order to get her license as a therapist back. Addison begins acting hormonal because of the IVF.
Cooper begins spending more time with Mason and Erica, until Mason says that he doesn't want to see him anymore. Amelia decides to help her friend die and begins giving her the drugs necessary, until Michelle has an allergic reaction and Amelia calls 911. Michelle moves in with Amelia, and when Amelia comes back from the store she finds Michelle overdosed on her medication on purpose, and Amelia begins the path to drugs again. Mason asks Cooper if he's his father, while Addison tells Sam about her IVF treatments.
Credits
Adapted from Wikipedia contributors, Private Practice season 5. HTML formatting and reference markers removed.