Supergirl Laura Vandervoort —who played Supergirl in the series "Smallville" — guest stars as Indigo, an enemy who commits her evildoing by traveling through the Internet. Melissa Benoist stars in this new episode. 8 p.m. CBS
The Voice The singing competition returns for a new season. 8 p.m. NBC
Crazy Ex-Girlfriend Rebecca and Josh (Rachel Bloom, Vincent Rodriguez III) head to Los Angeles for business. B.J. Novak guest stars in this new episode of the musical comedy. 8 p.m. KTLA
The Bachelor Ben and the final three women travel to Jamaica in this new...