What to Watch Monday: A Stormy Castle, Partners Overshares, iHeartRadio Music Fest and More

On TV this Monday: It won’t be hard to forecast Beckett’s reaction when a journalist advances on Castle, an intimate reveal causes problems for some Partners, the Alphas reel after the death of one of their own and there’s a jam for just about everyone at the iHeartRadio Music Festival. As a supplement to TVLine’s original features (always linked within), here are 10 programs to keep on your radar tonight.

8 pm iHeartRadio Music Festival (The CW) | The genre-crossing concert – which took place in Las Vegas in September — featured performances from artists including Usher, Bon Jovi, Taylor Swift, Aerosmith, Lil Wayne, Enrique Iglesias, Brad Paisley and Pitbull. At least some of those will be shown during the two-hour broadcast, though maybe you won’t see Billie Joe’s expletive-laden-though-pretty-awesome rant.

8 pm Bones (Fox) | When Booth has to stay behind to work on his department’s budget, Sweets gets a temporary partner in FBI Special Agent Olivia Sparling (Shark‘s Danielle Panabaker). (Get more scoop on the episode.)

8 pm Alphas (Syfy) | Dani’s death at Parish’s hands leaves Rosen and the team in shock.

8 pm How I Met Your Mother (CBS) | Barney’s detailed pre-nup outrages Quinn and inspires the guys to propose their own relationship amendments to their significant others.

8:30 pm Partners (CBS) | Note to Joe: When you and Ali haven’t gotten it on in a while, maybe it’s best not to share info that with Louis. Just a tip.

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9 pm Warehouse 13 (Syfy) | Midseason finale: The Warehouse’s battle against the unspeakable power that has steadily consumed Artie comes to a shocking, devastating conclusion.

9 pm Major Crimes (TNT) | Tao’s world is rocked when an eight-year-old murder conviction is overturned; Rusty has his first outing with his dad.

9 pm 2 Broke Girls (CBS) | Will Martha Stewart ever call? Max and Caroline keep the faith that the home-and-garden guru, who loved their cupcakes in last season’s finale, will support their fledgling business. Also, Caroline loses a lucky keepsake. (If it’s Chestnut: Seriously, girl – you’ve gotta keep that horse tied up!)

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10 pm Hawaii Five-0 (CBS) | McGarrett asks Catherine for help in finding his mom; the team calls on August March (returning guest star Edward Asner) for assistance when an art heist turns deadly.

10 pm Castle (ABC) | On Beckett’s first day back from suspension, she and Castle investigate a weather forecaster’s death. Think it’ll be easy to keep their relationship on the QT with this hottie (played by Prison Break‘s Jodi Lyn O’Keefe) making Castle’s mercury rise?

Which of the above is must-see for you? Also, hit Comments to offer your own tune-in suggestions.