"I big, I punch," is probably the most effective and concise way of summing up the last three seasons of Reacher on Prime Video. Alan Ritchson's titular hero has slammed, drop-kicked, and battered his way through three separate stories to date, but Reacher season 4 has something new to offer.

Instead of honing in on Reacher's past or personal vendettas, our eight new episodes are ones of political espionage. Adapting the Lee Child novel Gone Tomorrow, he instead becomes embroiled in a CIA conspiracy after suspecting a woman on a New York City subway train is actually a suicide bomber. It's drama that makes you think, for the first time ever in this franchise.

It's a big tonal swing, and probably a risk that the crime drama needed to take four seasons in — but that doesn't mean it's completely paid off. In a nutshell, getting to the bottom of a big city political scandal has never made me yearn for the small-town days of seasons gone by more.

Clearly, this is part of Reacher's big-picture thinking. Seasons 1 and 3 were based in more rural locations, with seasons 2 and 4 respectively based in New York and Philadelphia. We already know that Reacher season 5 will be set in Oklahoma (like the novel Make Me), and I'm desperate to get there.

Does Reacher really have the chops to dig deeper into its punchy action? Probably not. I doubt we'll see the show stray back into these waters again, and there's good reason why.

Jack Reacher isn't the right action hero to lead a political espionage investigation

If the line "Oh no, I got it wrong!" is your signal to the audience that a dramatic twist is about to take place, then you're likely in over your head. This dialogue passes Reacher's lips halfway through season 4, with our bullish hero a fish out of water, scrambling through a plot that's much bigger than he could ever properly cope with.

On the one hand, I like that this level of insecurity humanizes Reacher more. There's always been more to him than just being muscle and meat hooks in a T-shirt, but now he's able to put his money where his mouth is. Selflessness, understanding, and the ability to be vulnerable flow out of Reacher abundantly in a way it never could have before, and I appreciate that.

However, let's not do this kind of storyline again. Our overarching threat is simultaneously too complicated to fully sink your teeth into and too mundane to actually bother caring about it. The armchair detectives among us will work out who is the 'villain' underpinning Reacher's latest disaster in a matter of seconds, and between season 4's beginning and end, you'll need a notepad and pen to keep up.

I think that an obstacle hidden in plain sight is the fact that Reacher himself doesn't have the same gravitas in a city as he does in a town. Plop him in the centre of Georgia, and he'll obviously scare the crap out of everyone around him. But in New York and Washington, D.C., he's a mere fly in the ointment. Add in a subpar storyline, and Reacher season 4 isn't exactly making its mark in an already oversaturated genre.

However, this might be Reacher's best supporting cast to date

But let's stop being a Debbie Downer... It's clobbering time! For surface-level viewing, Reacher season 4 is ticking every box you'd expect after its last three seasons, and that makes for some satisfying weekly viewing.

The secret weapon, however, is its supporting cast, which may just be my favorite of all we've had to date. New additions Tamara Green (Sydelle Noel), Jacob Merrick (Christopher Rodriguez-Marquette), and Russell Plum (Kevin Weisman) are Reacher's unlikely gang of allies, and the uneasy friendships that develop between them are the relationships that you're really rooting for.

Together, the awesome foursome drive the excitement of the piece, and help us paper over anything that isn't really gelling together in the story itself. We're desperate for them to break the rules and stick two metaphorical fingers up at authority, and they routinely indulge us. Best of all, our trio of newcomers pulls out all of Reacher's caring traits that we're desperate to see, even if they all make a few bad decisions along the way.

Without giving anything away, there are definitely some distasteful tones bubbling underneath the surface, particularly around how the story approaches sex work and, well, women in general. But hey, who cares when Reacher is going to punch something and take his shirt off, huh?

Reacher season 4 begins airing on Prime Video from August 12.