What's New Tonight: Friday, April 19th.

8:00 PM EST:

“Happy Endings” on ABC. Penny rebounds from her breakup with Peter by hooking up with the Car Czar, stunning her friends in the process. Her new landlords Brad and Jane aren’t too impressed by her choices, either, making matters worse. Elsewhere, the gang pressures Max the moocher to get a job.

“Nikita” on The CW. Nikita is drugged and introduced to Amanda’s mental-conditioning process. Birkhoff and Sean attempt to save the women they love.

“Sons of Guns: Loaded Up” on DSC. Will, Steph, and Kris pay Las Vegas a visit to demo a gun.

“Fashion Star” on NBC. The designers create clothes for a night out on the town. They are also challenged to direct a car-themed photo shoot.

9:00 PM EST:

“Da Vinci’s Demons” on STARZ. The quest for the Book of Leaves continues for Leonardo. The Pope’s nephew runs into a spy. Leonardo’s differing war designs cause a rift between him and the Medicis when they don’t reach expectations.

“Shark Tank” on ABC. A jewelry line created by two veteran women is pitched, as well as a door-to-door luggage service. Also featuring a Colorado man who swears to have perfected the scone, a self-proclaimed geek with the idea of made-to-order furniture, and an update on Season 4’s Lori Greiner and her investment in Scrub Daddy.

“Grimm” on NBC. A looming volcano threatens to engulf Portland in lava. Adalind gains a new ally. Juliette needs help in dealing with her multiple memories of Nick.

“Vegas” on CBS. Dixon gets arrested by Katherine after Violet accuses him of assault. Lena finds a body of a gambler at the Savoy in a suite.

“Sons of Guns” on DSC. The season 4 premiere. An important order is mishandled.