Billion Dollar Buyer A swimwear designer hopes her Cuban-style bikini bottoms are the right fit in the season premiere of this unscripted marketplace series. 7 p.m. CNBC
The Flash After helping Barry (Grant Gustin), Caitlin (Danielle Panabaker) is overtaken by her lethal alter ego and makes Julian (Tom Felton) her prisoner in this new episode, directed by Kevin Smith. 8 p.m. KTLA
The Middle Frankie (Patricia Heaton) has a hard time keeping her negative opinion of Axl’s (Charlie McDermott) new girlfriend April (Greer Grammer) to herself, while Axl plans to go to more than one of...