The Voice The first round of vocalists performs for coaches Adam Levine, Blake Shelton, Gwen Stefani and Alicia Keys in the season premiere of the singing competition. 8 p.m. NBC
Supergirl Dean Cain reprises the role of Jeremiah Danvers, who is reunited with his daughters Kara and Alex (Melissa Benoist, Chyler Leigh). Chris Wood, Jeremy Jordan and David Harewood also star. 8 p.m. KTLA
24: Legacy Cooperating with an arms smuggler may be their only way for Carter and Grimes (Corey Hawkins, Charlie Hofheimer) to find the terrorists. Miranda Otto, Jimmy Smits, Anna Diop, Teddy Sears, Dan...