What to Watch Friday: Merlin's Enchanted Exit, The Moment Passes, Men in Treehouses and More

MerlinOn TV this Friday: Merlin casts his final spell, a wannabe conductor has his Moment, an encore of The Following boldly Poes where no one has gone before and Treehouse Masters wood love to build you a high-end hideaway. As a supplement to TVLine’s original features (linked within), here are 10 programs to keep on your radar.

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8 pm Dateline NBC (NBC) | Even when a story is so heinous you can scarcely believe it’s true, isn’t it comforting to have Lester Holt and his glasses around to tell you about it?

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9 pm Da Vinci’s Demons (Starz) | Leonardo builds an underwater suit and uses the sewers to enter the Vatican, where he meets the Pope and the mysterious prisoner.

9 pm Primetime: What Would You Do? (ABC) | Season premiere: John Quiñones is back and ready for a whole new round of shaming you into doing the right thing.

9 pm The Following (Fox) | Repeat to Revisit: Seasoned followers and Joe Carroll newbies alike can start all over again with the bloody serial killer thriller’s pilot.

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10 pm Merlin (Syfy) | Series finale: Merlin faces the moment of his destiny as the fate of Arthur and all of Camelot rests in his hands. No pressure.

10 pm XIII: The Series (Reelz) | XIII undergoes a face-change operation and starts to believe he really is Victor Gong. But he’s wrong.TreehouseMasters

10 pm Treehouse Masters (Animal Planet) | Series premiere: “Visionary and tree whisperer” Pete Nelson designs plush digs for those wanting an arboreal escape. Bart and Milhouse, eat your hearts out.

10 pm Real Time With Bill Maher (HBO) | Guests include journalist Michael Isikoff, actress Brit Marling, writer James Poulos and humorist Paul Rudnick.

10 pm Maron (IFC) | Gina Gershon (Rescue Me) guest-stars as Marc’s age-appropriate date; Mark Duplass (The League) also appears.

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11 pm The Moment (USA Network) | Season finale: A man pursues his dream of being an orchestra conductor. (Not yet renewed.)

Hit the comments with your must-see picks from tonight’s lineup!