Just enough of Apple TV’s latest high-profile thriller works to recommend it, even if it never quite achieves the heights it should with its premise and captivating leading man. Idris Elba has had a fascinating career in that he has the screen charisma to be a movie star, and yet his most popular roles remain on the small screen (“The Wire,” “Luther”). Here, despite the presence of some strong supporting performers, he uses every bit of that magnetism in a way that almost becomes a detriment to the project in that it loses altitude a bit whenever he’s not centered. I walked away from “Hijack” thinking that Elba could easily carry an action show like “24”—an obvious inspiration for this real-time thriller—but that I’d rather see him kicking ass on the big screen in a “John Wick”-esque franchise instead. That I began to unpack the career of the star over the seven chapters of “Hijack” is a bit telling regarding the quality of the thrills here in a show that’s consistently interesting but never quite as engaging as it should be, largely because of how many characters it tries to bring onto this overbooked flight.

Written by George Kay (the recent Netflix adaptation of “Lupin”) and directed by Jim Field Smith (“Butter”), “Hijack” opens with the final passengers boarding a 7-hour flight from Dubai to London. One of those last people on board is Sam Nelson (Elba), who exchanges a few texts with his ex-partner that makes it clear that things are a bit rocky on the home front. She even tries to encourage him not to come to London. He ignores that instruction and ends up on a flight from Hell when the journey is overtaken by five hijackers. Led by a stoic gent named Stuart (an excellent Neil Maskell), the hijackers seem to have a highly coordinated plan, including a way to emotionally manipulate their way into the cockpit, although Kay has a habit of parsing out information in a frustrating manner. For several episodes, it’s not even clear what the hijackers’ intentions are or what they hope to accomplish (a folder named “Demands” appears more than halfway through the series), which could theoretically add tension by making us feel like confused passengers on the plane, but the show so consistently leaves the vessel that it just starts to feel like a cheap trick.

Instead of locking us in our seats with Sam and the rest of the kidnapped passengers, “Hijack” jumps to the U.K. to also include the people who will try and stop a tragedy from the ground. The great “Torchwood” star Eve Myles plays Alice Sinclair, one of the air traffic controllers who first understands the severity of what is happening on the flight. Myles give a smart no-nonsense performance, often the voice of reason that elucidates the stakes of each escalating situation—usually that the logical thing to do would be to shoot the plane out of the sky. Much of “Hijack” consists of Sam trying to lower the stakes of the hijacking so that doesn’t happen, which makes for some of the most interesting writing and performing by Elba. If the British government—or the Hungarian one they’re flying over—suspect that they could have another 9/11 on their hands, they won’t hesitate to kill everyone on board. Elba conveys how much his character’s background as a business negotiator makes him aware that he may have to give into his tormentors at times just to keep everyone calm.

Sam and Alice aren’t the only ones on edge as the Home Secretary and other British power players debate what to do with an uncontrolled plane headed for one of the biggest cities in the world. These scenes are admirable on a political level, but they ultimately serve as a detriment to “Hijack” by reducing tension every time we leave the plane. Similarly, Neil Maskell is solid as a cop who become deeply involved in the case to a connection he already has with Sam, but his arc too serves to clutter more than anything else. “Hijack” undeniably works best when it’s Elba vs. Maskell, and I wished for more juicy scenes between the two actors instead of subplots about what was happening on the ground.

Still, “Hijack” builds to an impressive final chapter, an episode that really allows Elba to use all of his skills to try and save the day. He understands that sheer force won’t stop a hijacking, turning Sam into a negotiator more than an action hero. And yet even the final episode goes on a few scenes too long in a way that stretches disbelief. Everything that works about “Hijack” has a bit of fat around it that should have been cut away. And I’m not really sure any of it would have worked without Elba, sitting in the seat of his career, unsure where he’s going to land.

Whole series screened for review. Starts on Apple TV+ on June 28^th, with episodes dropping weekly.