Season 4 (Grey's Anatomy)

Season 4 is the 4th season of Grey's Anatomy. In this season, the programme continues to follow the lives of Meredith Grey and her co-workers Izzie Stevens, George O'Malley, Cristina Yang, Derek Shepherd, Callie Torres, Miranda Bailey, Erica Hahn, Mark Sloane and Lexie Grey.

In the beginning of the season, it deals with Addison Montgomery's and Preston Burke's departures. It also deals with the heated relationship between Meredith and Lexie, Meredith and Derek, and George and Izzie's romantic relationship.