Like the Jason Bourne and Jack Reacher faithful, fans of avenging hero Mitch Rapp have been waiting a long time to see late author Vince Flynn's best-selling creation on the big screen.

After watching American Assassin they would have been happy to hang on another 18 years.

Vince Flynn's best-selling novel has hit the big screen...but you might be better to wait until it's on TV

This is one of those sum-of-its-parts mysteries where it seemed harder to make a bad thriller than a good one. The Maze Runner's Dylan O'Brien can hack it (literally) as a tough guy; he has Michael Keaton as his show-no-mercy mentor and director Michael Cuesta was behind the lens for Homeland and the much-admired Kill the Messenger. That's quite the troika, but saving this movie proves to be harder than saving the world.

Michael Keaton plays tough guy Michael Cuesta

The big problems are a script that thinks too big, confuses fast-moving with rushed and has a non-event nemesis whose plan for revenge is surprisingly similar to Bond villain bombast. Somewhere between Warsaw, Istanbul, Rome and London England, a fluffy white cat is in need of a good home...

American Assassin is not up to much

While there are a couple of decent scraps (luxury apartments, hotel rooms - you know the playbook), American Assassin never manages to measure up to even second-tier stuff like Spy Game, The Recruit and The Gunman. As for the ending, well; an alternate cut of Die Hard, where it turned out the gang in Nakatomi Plaza were really aliens and the complex was a long-lost spaceship, would be easier to forgive.

A bad Rapp indeed.