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HBO has acquired three-part miniseries “Gunpowder,” which stars the premium-TV network’s “Game of Thrones” lead Kit Harington.

Harington, who will also executive produce the new thriller, plays his real-life ancestor Robert Catesby in the project, which is based on the 17th century events that led to Guy Fawkes Day. Catesby was the driving force behind the Gunpowder Plot in 1605 London, per HBO’s description (and, we suppose, history). A committed Catholic at a time when Protestant England persecutes Catholics relentlessly, Catesby’s refusal to abandon his religion brings him to the edge of financial, social and psychological ruin.

In addition to Harington, Peter Mullan, Mark Gatiss, Liv Tyler, Edward Holcroft, Shaun Dooley, Tom Cullen, Robert Emms, Derek Riddell, Sian Webber, David Bamber and Kevin Eldon star in the miniseries, which is written by Ronan Bennett and directed by J Blakeson.

Also Read: 'It,' 'Game of Thrones' and 'Rick & Morty' Deliver Big Q3 Earnings for Time Warner

Mullan portrays head Jesuit Father Garnet, whose peaceful protestations have little effect on Catesby. Tyler plays Catesby’s astute and capable cousin, Anne Vaux, who becomes suspicious about his activities and fears the consequences will be the exact opposite of what Catesby intends.

Gatiss plays Robert Cecil, King James’ spymaster, who directs efforts to hunt down, torture and kill priests, while rank-and-file Catholics are subject to oppression and the loss of their property.

Set for a December premiere event, “Gunpowder” chronicles the evolution of the plot, the selection of collaborators to carry it out, the gathering of resources and the obstacles to its execution, even as Catesby’s team plays a deadly cat and mouse game with Cecil’s ruthless spy network.

Also Read: Kit Harington on Scrapped 'Game of Thrones' Pilot That Never Aired: 'They Made a Lot of Mistakes'

“We are delighted to offer a platform for a project that is so close to Kit Harington’s heart,” said Kary Antholis, president, HBO Miniseries and Cinemax Programming. “Kit’s passion for and belief in ‘Gunpowder’ are evident in every frame of the miniseries.”

“Three years ago, Daniel West and I conceived and began developing ‘Gunpowder’ with Kudos and Ronan Bennett,” added Harington. “We are now thrilled to share this unique story with the U.S. audience. I can’t think of a better place to do that than my home at HBO.”

“Gunpowder” is produced by Kudos (part of Endemol Shine Group) in association with Thriker Films, originally for BBC One.

Also Read: Kit Harington Says He Was 'Wrong' to Complain About 'Sexism Against Men'

Episode 1 of “Gunpowder” will premiere on December 18 at 10 p.m. The other parts will air at the same time over the subsequent two nights.

20 Actors Who Are Way Older Than Their Characters (Photos)

Have you ever watched a show about teenagers and thought, wait, I didn't look like that at 16? Us, too. Here are actors on your favorite shows that are much older than the characters they play.
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Katherine Langford

The breakout star of "13 Reasons Why" is 21 years old. Hannah Baker, the high school student she plays who ends up committing suicide, is only 17.
Corina Marie for TheWrap
Dylan Minnette

Minnette's Clay Jensen plays the love interest to Langford's Hannah. Clay is also 17 on the show, but Minnette is 20. Though only a 3 year difference, during that age span, teens turn to twenty-somethings that can vote and are in college.
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Christian Navarro

Navarro's Tony Padilla in "13 Reasons Why" is everyone's favorite nostalgia-loving, good-haired guardian angel. But while his character is supposed to be 18, Navarro is 25. Talk about a super senior.
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Alisha Boe

Boe plays 17-year-old cheerleader Jessica Davis on "13 Reasons Why," but the actress is 20, just like Minnette. It's clear from the way she delivers those dry one-liners that she has more experience than her character.
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Brandon Flynn

Rounding out the "13 Reasons Why" crew is Flynn, who plays 17-year-old bad boy Justin Foley. Flynn is 23, making him a whole kindergartner older than his character.
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K.J. Apa

The main character in The CW's "Riverdale," Archie is only 15, while Apa is 19. So while he's the youngest on our list, he's had time to grow up way more than most high school sophomores.
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Lili Reinhart

The quintessential girl-next-door in "Riverdale" that's based on the "Archie" comics is 15-year-old Betty, who is played by 20-year-old Reinhart. We've never seen a more put-together teenager.
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Camila Mendes

New girl Veronica Lodge in "Riverdale" is the same age as Betty and Archie, but Mendes is 22.
CW
Cole Sprouse

The narrator of the murder-mystery, Sprouse plays Jughead on "Riverdale." Jughead is also the same age as the rest of the sophomore crew, but the actor is 24.
CW
Kit Harington

"Game of Thrones'" Jon Snow might know nothing, but we have a feeling Harington knows a lot. The actor, 30, plays the born-again hero who is supposed to be 17 at the start of the series. In the books, Snow is 14.
HBO
Emilia Clarke

The "Game of Thrones" mother of dragons is 30 IRL but, at the beginning of the series, Dany is only 14.
HBO
Jack Gleeson

We all love to hate the young King Joffrey on "GoT," who is only 17 when he becomes protector of the realm. In the books, he was 13. Gleeson, though, is 25.
HBO
Lucy Hale

What a pretty little liar... when it comes to age. Hale is 27. Her character begins the show at 16.
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Shay Mitchell

Mitchell plays another fourth in the girl squad on "Pretty Little Liars." She's 30, where her character Emily is 16 at the beginning of the series.
elias tahan
Ashley Benson

The actress is 27, whereas her character Hanna on "PLL" is 16 just like the rest of the group.
H&M
Troian Bellisario

The last of the "PLL" crew is also the oldest. She's almost twice her character's age at 31.
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Jason Earles

Remember "Hannah Montana?" Remember Hannah's annoying older brother? Yeah, he was 15. Earles is 40 now; he was 29 when he played Jackson.
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Ian Somerhalder

The smoldering Damon in "The Vampire Diaries" was turned into a vampire when he was 17, but Somerhalder is 38.
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Sophie McShera

McShera plays the young kitchen maid Daisy in "Downton Abbey." McShera is now 32.
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Keiko Agena

Lane is perhaps the most underrated character on "Gilmore Girls." She's 16 at the beginning of the series, but the actress was more than 10 years older than her character at 27.
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1 of 21

Exhibit A: Kit Harington is 30 years old, but his character Jon Snow is only 17 in the TV series “Game of Thrones,” and only 14 in the books

Have you ever watched a show about teenagers and thought, wait, I didn't look like that at 16? Us, too. Here are actors on your favorite shows that are much older than the characters they play.

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