Double Trouble! Get a Sneak Peek of Glee’s Grant Gustin Playing Twins on CSI: Miami

West Side Story tour veteran Grant Gustin, who made a splash as Sebastian, Glee’s trouble-making Dalton Academy Warbler, will guest star as twin brothers on the CBS' hit CSI: Miami on January 29. When a skydiver is murdered, the 100 plus children he fathered as a sperm donor become potential suspects, including the brothers played by Gustin. The young actor will also appear in the Michael Jackson tribute episode of Glee on January 31. Get a doubled dose of Gustin by watching the CSI preview below.