Last month, TV Guide reported that Caterina Scorsone joined the cast of Private Practice in a recurring role as Dr. Amelia Shepherd, Grey’s Derek Shepherd’s younger sister. Clearly this is another clever tactic from Shonda to get more McDreamy loving Grey’s fans to watch the Addison-centered Grey’s spinoff set in sunny LA. Catch Scorsone’s debut on the new episode of Private Practice tonight at 10pm on ABC.

Episode 19, “Eyes Wide Open” – When famed neurosurgeon Dr. Ginsberg and her team pay a visit to St. Ambrose to save the life of Kayla, Addison is shocked to see Amelia Shepherd – Derek’s younger sister on the team. But Amelia’s presence causes strife between Addison, Sam and Pete when she claims she can save Kayla’s life after Dr. Ginsberg declares nothing can be done. Meanwhile Charlotte seeks from Cooper’s with a sex education seminar for the elderly that only leads to more tension between the two, as they try to figure out how to work together.