Watchmen's bold, ambitious view of an alternate United States gets a whole lot bigger in a promo for the HBO series' fourth episode.

The promo for the episode titled "If You Don't Like My Story, Write Your Own" begins with a new woman named Lady Trieu inviting the characters into an impressive sci-fi facility she dubs the first wonder of the modern world, offering them a chance at building their legacy.

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The promo then reveals Sister Night and Looking Glass continuing their investigation of Judd's murder, with Sister Night sharing Judd's Klan outfit that she discovered in a secret closet. Meanwhile, Adrian Veidt continues his eccentric activities in his remote country manor after reclaiming the mantle of Ozymandias.

The previous episode saw the FBI ramp up its investigation into Judd's murder, with The Comedian's daughter and former Silk Spectre II Laurie Blake leading the hunt. However, judging by the introduction of Lady Trieu, the investigation is about to get a whole lot stranger.

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Developed by Damon Lindelof, HBO's Watchmen stars Jeremy Irons, Regina King, Don Johnson, Tim Blake Nelson, Louis Gossett Jr., Yahya Abdul-Mateen II, Tom Mison, James Wolk, Adelaide Clemens, Andrew Howard, Frances Fisher, Jacob Ming-Trent, Sara Vickers, Dylan Schombing, Lily Rose Smith and Adelynn Spoon. The series airs Sundays at 9 p.m. ET/PT.