Charlie Cox (photo) is most well-known for his portrayal of Matt Murdock/Daredevil in Marvel's Daredevil. He also portrayed the same character in The Defenders and She-Hulk: Attorney at Law. Next to that, he has also been a part of HBO's Boardwalk Empire, amongst others.
The Ukrainian Olga Kurylenko played a part in the Starz drama series Magic City, which featured Jeffrey Dean Morgan in the lead.
Oona Chaplin could be seen in shows such as HBO's Game of Thrones, BBC's Taboo (2017), and Showtime's The Comey Rule.
Tracy Ifeachor portrayed characters in Prime Video's Treadstone, the superhero series DC's Legends of Tomorrow, and the thriller Quantico.
Ciaran Hinds (photo below) has a lot of credits under his name. His most well-known parts were that of John Franklin in AMC's anthology series The Terror, Mance Ryder in HBO's Game of Thrones, and Gaius Julius Caesar in HBO's Rome.
Netflix revealed the following about the plot of the series:
"Trained and groomed by MI6, Adam Lawrence’s (Cox) career seems set. But when the past catches up with him in the form of Kara (Kurylenko), a Russian spy with whom he shares a complicated past, he is forced to question everything and everyone in his life. A triangular relationship forms between Kara, Adam and his wife, Maddy (Chaplin); three people who are trying to expose each other’s secrets, navigate political and diplomatic relationships, whilst hanging onto their personal lives, and those they love most."
Question everything, suspect everyone. TREASON, a limited series from the creator of Bridge of Spies, starring Charlie Cox comes to Netflix on Dec 26th pic.twitter.com/GHSHDn2qjv
— Netflix Geeked (x-on:NetflixGeeked) November 21, 2022
Unfortunately, a trailer has not yet been revealed.