Mysteries abound on British TV, and the new miniseries First Woman is no different, as it centers around a prominent woman who inexplicably disappears. What separates it from the pack is that the woman in question is the first woman to set foot on the Moon, and she’s just vanished from a lunar colony. The upcoming series has just added two new stars to its ensemble cast.

According to reports, Alex Hassell (Rivals) and Jennifer Ehle (Pride and Prejudice) have joined the cast of First Woman, which is now in production in Belfast, Northern Ireland. The series stars Andrea Riseborough (To Leslie) as pioneering astronaut Claire Reith, who disappears from a lunar colony; not only are her fellow astronauts suspects, so are the inhabitants of a rival Chinese moon base. Her husband, Ben (Ashley Walters, Adolescence), is stuck on Earth, frantically trying to find out what happened to her. That’s also the job of Helen Sadler (Ehle), an investigator with the UK Space Flight Authority who’s on the trail of Claire’s disappearance. Hassell will star as Christopher Scott, the UK Prime Minister; he soon finds that the secrets uncovered by the investigation could endanger his hold on power.

Who Are Alex Hassell and Jennifer Ehle?

A regular on British TV, Hassell made his Hollywood debut in the George Clooney-directed satire Suburbicon. He has subsequently starred on the TV series The Boys and Cowboy Bebop, and turned up in films like The Tragedy of Macbeth, Violent Night, and Young Woman and the Sea. He can next be seen reprising his role as aristocrat Rupert Campbell-Black in the upcoming second season of the steamy Disney+ drama Rivals. Ehle is the daughter of novelist John Ehle (The Winter People) and actor Rosemary Harris (Spider-Man); she is best known for starring alongside Colin Firth in the BBC‘s 1995 adaptation of Pride and Prejudice. She has since appeared in films like Zero Dark Thirty, Contagion, and The King’s Speech. She is next set to appear as Gabriella de Lioncourt in AMC‘s The Vampire Lestat.

First Woman was created by Lydia Yeoman and George Oakes, who also wrote the series alongside Ben Schiffer. It is directed by Philip Martin (The Crown), and is executive produced by Mammoth Screen’s Damien Timmer, James Gandhi, Martin, and creators Oakes and Yeoman. It is a production of ITV.

First Woman is now in production; no release date has yet been announced.

via Collider