The Tree Hill Ravens are back together to celebrate the Christmas season on Lifetime. In this special one-hour reunion, Hilarie Burton, Tyler Hilton, Danneel Ackles, Antwon Tanner of "The Christmas Contract" and Stephen Colletti of "Hometown Christmas," reunite for a special evening that will include a few surprise special guests. "'Tis the Season: A One Tree Hill Cast Reunion" is produced by A+E Originals. Steve Ascher, Kristy Sabat and Allie Breslin serve as executive producers. Brie Miranda Bryant executive produces for Lifetime.