Who played in both Cold Case and Grey's Anatomy?
Cold Case (season 1): Season one of Cold Case, an American television series, began airing on September 28, 2003. Cold Case (season 1):  In 3 episodes, Justin Chambers had played Chris Lassing, Lilly's partner on the Philadelphia Homicide Squad, but left the show to star as Alex Karev in ABC's hit drama show "Grey's Anatomy". Alex Karev: Alexander "Alex" Michael Karev, M.D. is a fictional character on the ABC television series "Grey's Anatomy", portrayed by actor Justin Chambers.
Justin Chambers