I put together this musik video with some scenes from the season finale. The song is oleh Grace Potter and the Nocturnals, called "Falling atau 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 tampil from other hospital-based dramas.