Slow Horses, based on the first book in the Slough House series by author Mick Herron, is the newest addition to the Apple TV+ roster of thrillers.

In the series, which premieres Friday, Gary Oldman plays Jackson Lamb, the leader of a group of misfit spies who work cases in secret while MI5 looks down its nose at the scrubs.

Directed by James Hawes and created by Will Smith (no, not that Will Smith), the first two episodes of this oddball spy show prove reasonably diverting.

Apple TV+ released its first trailer for Slow Horses, its darkly comic espionage thriller series starring Gary Oldman and Kristin Scott Thomas. And judging by the 2+ minute preview, the show looks like it will be both hilarious and thrilling — a rare feat — as it depicts the fates of “screw-up” MI5 agents sent to “Slough House.”

“Bringing you up to speed’s like trying to explain Norway to a dog,” section chief Jackson Lamb (Oldman) says to a group of his hapless charges at one point. The scene is intercut with the Scott Thomas character explaining, with characteristic elegance and wit, that no agent has ever returned from Slough House to respectable duty.

The amazing Samuel L. Jackson will star in The Last Days of Ptolemy Grey when it premieres on Apple TV+ in March. A new trailer gives an advance look at a series that’s sure to be both uplifting and heartbreaking.

Apple’s streaming service also revealed on Friday that the espionage series Slow Horses starring Gary Oldman will debut in April.

In addition, Apple TV+ gave the launch date for more shows coming this spring — all filled with celebrities.