I completely agree with the first reviewer: I had low expectation after seeing the trailer, too. But "The Bad Guys" turned out to be a very clever movie, well-made, with a sophisticated script, and fast-moving. Most importantly: It's not taking itself too seriously. I mean: A shark as a master of disguise!?

I don't know (yet) the books on which this movie is based. Oviously the story is also inspired by the various Ocean's 8/ 11/ 12/ whatever-movies, but it is definitely an over-the-top-version of these caper movies. These movies always tried to be believable; "the bad guys" tries to be fun. And it succeeded in that!