When does Without a Trace return?

Without a Trace is an American police procedural drama television series. It aired on CBS from September 26, 2002, to May 19, 2009 with the total of seven seasons and 160 episodes. It starred Anthony LaPaglia, Poppy Montgomery, Marianne Jean-Baptiste, Enrique Murciano and Eric Close with Roselyn Sánchez joining the cast in season 4. It was one of CBS' most successful series, earning high television ratings and winning a Primetime Emmy Award.
Each episode followed the search for one individual under tight time constraints. The real FBI does investigate missing persons; specifically, they have the authority to help in any "mysterious" disappearances of children abducted by nonfamily members. A crossover episode in 2007 featured characters Gil Grissom from CSI and Jack Malone from Without a Trace working together to solve the same case.