Grimm (9 p.m., NBC/Ch. 5) moves to a new night and time, which is both a good thing and, potentially, a bad thing.There are more viewers in front of their TVs on Tuesdays, which is good. But the competition is also tougher, which could be bad.At any rate, this is a good sign for the future of "Grimm." And that future is looking pretty bright, anyway, because NBC has already ordered another season.Oh, in tonight's episode, Nick investigates evidence of possible alien landings.Elsewhere on TV ...NCIS (7 p.m., CBS/Ch. 2): A Mossad officer is murdered.Splash (7 p.m., ABC/Ch. 4): More celebrities jump really far into a pool.The Voice (7 p.m., NBC/Ch. 5): Utahn Ryan Innes is among those performing in the knockout rounds.NCIS: Los Angeles (8 p.m., CBS/Ch. 2): The body of a cartel boss is stolen.Hart of Dixie (8 p.m., CW/Ch. 30): Zoe decides to express her feelings.Dancing with the Stars (8 p.m., ABC/Ch. 4): Another pair is eliminated.Ready for Love (8 p.m., NBC/Ch. 5): The three guys all go on multiple dates.Warehouse 13 (8 and 10 p.m., Syfy): Pete and Myka try to stop a global plague. Golden Boy (9 p.m., CBS/Ch. 2): An aspiring model is murdered.Body of Proof (9 p.m., ABC/Ch. 4): A schizophrenic teen is murdered in a mental hospital.Frontline (9 p.m., PBS/Ch. 7): Do America's financial institutions protect people's retirements - or not?