Idiotic. Best left in the arrivals lounge rubbish bin.

Rating: 3/10 (25 July 2017)

And I say that with disbelief fully suspended.
This is what happens when you try to convert a reasonable page-turner into something without pages: over two hours' worth of escape room antics, laced with conspiracy theory, characters that are as unlikely as they are uninteresting, and dodgy science, the whole of it cobbled together in Europe and surrounded with plenty of non-English dialogue, to lend it an air of what some audiences presumably think passes for old world culture and sophistication.
There's a reason why Dan Brown's stuff is often classified as "airport fiction": you pick it up somewhere before departure, flick through it while waiting and in-flight, finish off around arrivals, and then throw it in the trash. This film is a pleasantly faithful adaptation of that concept.
Tom Hanks plays a shouty American academic-turned-sleuth (basically a flabbier Indiana Jones with more belly and less khaki), his cardboard cut-out, vaguely Southern European sidekick trails in his wake, echoing his leaps of intuition (when she isn't staring at some undisclosed point off-screen), mostly woodenly but sometimes in a foreign language, because that's more authentic than a shouty American, and the rest of the reasonably good cast spend most of the time gurning.
The only halfway interesting performance is from Nikolaj Lie Kaas, which is why I'm giving this 3 stars, instead of the minimum of 1 star necessary to be able to leave a review.