I spent a while looking anyway. There are WAY too many Jack Reacher books published, with various formats and collections, and that one was not rising to the top of any of my searches on various sites.
Another thing that might help track it down would be who the publisher of that collection is, or any other such specific information.
Otherwise, Jack Reacher series / collection looks like it is going to be way too generic to search for, with many other more common matches that are different things.
… Well, Google reverse image search… I think may be having trouble because you didn’t crop the image to only be the cover itself. But the results I get look like they are to some pirate web site offering a download of it, and not offering any publication information. Is this a physical book you have, or just a digital version? The cover image is so generic and featureless, that combined with the above result, I’m starting to think it might just be an electronic pirate edition. Is that possible?