"Step One" is the fifth episode of the fifth season of Private Practice and the 81st produced episode of the series. It is also the 236th produced episode of the Grey's Anatomy franchise. It was broadcast on October 27, 2011.
Addison begins in vitro fertilization without telling Sam and struggles to cope with the effect that the hormone inbalance has on her emotions while Sam and Violet treat a patient who won't take his anti-psychotic meds shedding light on Sam's desire to not have another child and forces Violet to realize the impact her suspension has had on her former patients. Meanwhile, when Amelia's friend returns to town asking for help ending her life, her resolve to stay sober is questioned.
- "Going Home" - The Bony King of Nowhere
- "My Little Dove" - I Hate You Just Kidding
- "The Ghost You're Haunting" - Robotanists
- "Just You" - Amy Stroup
- This episode featured cameo appearances by Cougar Town actresses Courtney Cox and Christa Miller. The actresses appeared as part of the series' attempts to put their stars in cameo roles in as many Fall series' as possible as a consequence of Cougar Town's third season airing mid-season. Another cameo occured in the Grey's Anatomy episode "Love, Loss & Legacy"