Law & Order: Special Victims Unit (NBC, 9:00pm EST) — Chris Meloni’s departure (and the way that Elliot Stabler was written out of Law & Order: SVU) always left an unsatisfying taste in the mouths of this long-running franchise’s fans. The good news, though, is that it’s all water under the Brooklyn bridge because Stabler is coming back to his old stomping grounds. The crossover episode with Mariska Hargitay and Ice-T will launch the show, and from there, it is full-on Stabler Time. In the debut episode, the squad works to help Stabler find the suspect who’s threatening his family.