Black Sails, away for the season!

Here’s what’s up in the world of TV for Friday, March 25 and Saturday, March 26. All times are Eastern.
Top pick
Black Sails (Starz, 9 p.m., Saturday): Pirates! In the third-season finale, the British finally come for the pirates in force. Lots and lots o’ force—ships, cannons, planks, parrots, the whole deal—as the long-gathering pirate war finally explodes. Toby Stephens’ sunburnt antihero Captain Flint and Luke Arnold’s young and hunky Long John Silver (remember, this is a Treasure Island prequel) are ready to sail off into the sunset, no matter the outcome. Although they’ll be back, as this stealthy Starz hit has already been renewed for its fourth season. Pirates!
Also noted
Sleepy Hollow (Fox, 8 p.m., Friday): Ichabod looks to his relationship with Betsy Ross in his ongoing attempt to keep a lid on The Hidden One—who, frankly, is not proving as formidable a Big Bad as Zack Handlen had hoped when the guy first showed up.
Grimm (NBC, 9 p.m., Friday): Nick and Hank return from investigating a monster attack in the woods, only to find that some ancient monster disease is whipping through the streets of Portland, Oregon. Portland native Les Chappell swears he just has the sniffles and is not—repeat, not—about to sprout horns, or grow a tail or anything. Well, horns or no, he’s on hand to review this episode.
Childrens Hospital (Adult Swim, 11 p.m., Friday): Childrens Hospital dives behind the scenes once again, and, once again, LaToya Ferguson marvels that the actors playing the doctors are actually more improbably, insanely funny than their characters.
Elsewhere in TV Club
Programming note, people. Starting Monday, look for your What’s On Tonight world to change—overnight! Now stay frosty—your favorite WOT correspondents are all still on board, we’re just slimming down and reorganizing, with an added emphasis on premieres, streaming content, and what’s coming back to the tee-vee (in addition to, you know, what’s on tonight). Also, look for the feature later in the morning (rather than 1 a.m.) for your televisual edification and ongoing Jeopardy commentary. CORRECTION! A RARE CORRECTION! We’ve heard your cries, and the What’s On Tonight will stay right where it is, posting at midnight. See, we listen. Thanks to everyone who voiced their concerns about the time change—we love you, you late-night kooks, you.
And remember:
In this week’s AVQ&A, your favorite AV Clubbers shake their heads ruefully in the direction of the question, “What perfect casting choices are ruined because the actor is question had the nerve to grow too old for the part?”
Tom Breihan’s A History Of Violence series is up to 1972, which means it’s time to glory in the spectacle of watching Bruce Lee beat the crap out of Chuck Norris. So, so satisfying.