I put together this 音乐 video with some scenes from the season finale. The song is 由 Grace Potter and the Nocturnals, called "Falling 或者 Flying." It was used in the beginning of the episode.
After Derek walks in on Addison and Mark he ends his relationship with Addison. Addison struggles to keep their marriage together, but Derek is adamant and walks out on her. Addison then moves on.
An interview with Katherine on the set of Grey's Anatomy - dressed in scrubs! She describes her fellow cast mates and what she believes differentiates the 显示 from other hospital-based dramas.