Grey's Anatomy Spoilers: Addison and Mark reunited for a crossover event!

Last we heard, there would be a chance of a Grey’s-Private Practice crossover soon… Ausiello confirms that it will definitely be happening and what we can expect during this crossover!

Expect the crossover to appear in early January, with Addison heading back to her Seattle Grace roots for “a top-secret crossover event involving Addison, Mark, and that blond chick from Terminator: Sarah Connor Chronicles.”

Ausiello divulges that Mark will ask Addison to return to Seattle Grace to perform a surgery on Leven Rambin’s character but “complications arise and Mark ends up taking [her] back down to Los Angeles to get more surgery.”

Source: Ausiello Files