‘The Agency’ Is a Slick and Pleasing Spy Drama

Pity the C.I.A. agents deploying their enhanced interrogation techniques, beating hostages and meddling; truly it is they who suffer. It’s hard work being a spy — but the hardest work of all is loving yourself.

“The Agency,” beginning Friday on Paramount+ (and debuting on Showtime at 9 p.m. Sunday), is set mostly within the London office of the C.I.A., where one of the primo dudes (Michael Fassbender), code name “Martian,” has been abruptly yanked back from a mission in Ethiopia. He was undercover there for six years, living as Paul and falling in love with Sami (Jodie Turner-Smith), a Sudanese historian and political activist. He wasn’t ready for the mission to end, and he is definitely not ready for their relationship to end — but c’mon, what are a few bent rules in the interest of hot-people diplomacy?

“This isn’t national security; this is personal,” Martian insists to his boss (Jeffrey Wright). “It’s the agency,” the boss bellows back. “Nothing is personal!” Ooooh!

The series is based on the terrific French show “The Bureau,” and in the four episodes (of 10) made available for review, it deploys a lot of spy-show standards: the rookie to whom everything must be explained, the ambitious but naïve flunkies, the secretly cooperative foreign attaches, the higher-ups who seem institutional and out of touch until they drop some monologue wisdom on our heroes.

Fassbender’s mesmerizing performance is the biggest draw here, giving viewers a real taste of what it’s like to love a liar. We’re never quite sure what his angle is, how much of his seemingly vulnerable moments are all part of the game. He finds an intriguing sparring partner in the agency’s therapist (Harriet Sansom Harris), with whom he is required to meet on account of how hard it is to reintegrate into real life after living undercover for so long. Other story lines for secondary and tertiary characters feel comparatively unmoored.

But on the whole, it’s all very slick and overtly, pleasingly fancy-schmancy. The show’s reflective-surfaces budget alone puts some national G.D.P.s to shame. The London of “The Agency” is a pallid grayscape where even the mall is dreary, where real life is the same color as CCTV footage. Every move here is surveilled, and the show revels in that constant unease. As the saying goes, just because you’re paranoid doesn’t mean they aren’t after you.