Question: when does derek and meredith get back together in season 2

title: Grey's Anatomy (season 2)
text: The season includes the first episode to be written Zoanne Clack , who would become one the series ' main writers , as well as a co-producer and executive story editor . Other writers include Kip Koenig , Blythe Robe and Elizabeth Klaviter . Executive producer Peter Horton returned to the series to direct five episodes for the season , after writing two episodes in the second season . Rob Corn directed two episodes , whereas Adam Davidson is credited for writing three episodes , his last ones in the series . Among the other directors are Wendey Stanzler , Mark Tinker , Jeff Melman , Jessica Yu , Lesli Linka Glatter , Michael Dinner , Dan Minahan , David Paymer , Julie Anne Robinson , Tricia Brock , and Seith Mann . Danny Lux continued his position as the main music composer for the series , while Herbert Davis , Tim Suhrstedt and Adam Kane served as the season 's cinematography directors . Susan Vaill and Edward Ornelas resumed their positions as editors , joined by Briana London , who left the series after nine episodes . Linda Lowy and John Brace , responsible for the casting since the beginning of the series , returned as casting team members . After the departure of Laurence Bennett , the production design team was taken over by Donald Lee Harris , with Amy B. Ancona and Brandee Dell'Aringa joining for ten episodes each .