Ignition is a psychological thriller about a bomber and a bomb disposal expert that is entirely contained in one room, and… well… that is about all I can tell you about it, because if I tell you any more then I’ll ruin the film for you and, trust me, you don’t want me doing that.

It is an independent movie, seemingly shot on a budget that stretched to a packet of crisps and a few pints of Guinness, but fuck me sideways, it’s a kick-ass piece of work.

First off, there’s the tension.

I haven’t been this tense watching a film since I discovered my step-dad’s copy of Confessions of a Window Cleaner and was convinced he would walk back into the room and catch me gawking at it.

It is palpable. It is sweat-inducing. And it will make your heart sit in your throat, pounding away like the reincarnation of Jon Bonham. There isn’t a single moment throughout the entire 84-minute runtime where I wasn’t on the edge of my seat, waiting for more of the story to unfold.

And it is a bloody good story.

As I said, I can’t give away any of it, but I can guarantee you more twists and turns than a bobsled run. The less you know about what is coming, the better, because Ignition is at its most effective when it has you exactly where it wants you: trapped in that room, trying to work out what the fuck is going on.

A huge part of the reason for that is the performance of Tommy Peter Walton in the lead role of our bomb disposal expert, Leon Colter.

Walton basically has to carry this film because he is acting against… well, again, spoilers.

Everything in Ignition goes through him.

He’s the engine room. The midfield general holding everything together with a stellar performance. He runs the emotional gauntlet from the first second to the last, and we are there for it, every step of the way.

It’s a hell of a lot to ask of an actor.

You have to feel for the main character, which is considerably easier when you have a cast around them to help create that connection. When the main actor is the sole focal point, however, you are relying on the person in the role to pull off a hell of a lot of magic.

And Walton is David Fucking Copperfield.

There really isn’t much more I can tell you about Ignition without stepping over the line into spoiler territory, and I don’t want to do that. The film’s biggest strength is its ability to keep you guessing, keep you uncomfortable and keep you waiting for the next piece of the puzzle to fall into place.

For an independent film made within what I can only assume were fairly limited resources, that is bloody impressive.

If you like independent thrillers with the heart attack throttle wide open, then you owe it to yourself to watch Ignition.

Just don’t ask me what happens.

I’m not telling you.

Ignition is now available on UK Digital now, courtesy of GrimmVision.