Supergirl (The CW), Monday 8PM - "Star-Crossed"
A new villain comes to National City, putting Supergirl on high alert; at the same time, she faces an attack by the Music Meister. Meanwhile, Winn's girlfriend, Lyra, gets Winn in trouble with the law; and Maggie attempts to help Winn, but old loyalties get in the way.
The Flash (The CW), Tuesday 8PM - "Duet"
A crossover episode with Supergirl concludes. Barry and his team are surprised when Mon-El and Hank Henshaw arrive on their Earth carrying a comatose Supergirl who was whammied by the Music Meister. Unable to wake her up, they turn to Team Flash to save her. However, the Music Meister surprises The Flash and puts him in a similar coma. Kara and Barry wake up without their powers in an alternate reality where life is like a musical and the only way to escape is by following the script.
Legion (FX), Wednesday 10PM - "Chapter 7"
David tries to find a way out of his predicament.
The Expanse (Syfy), Wednesday 10PM - "The Weeping Somnambulist"
Bobbie becomes a pawn in a political struggle between Earth and Mars.
The Walking Dead (AMC), Sunday 9PM - "Something They Need"
A group of Alexandrians embark on a journey to a distant community; and one group member must make a heartbreaking decision.