For some reason Tom Holt has never gotten the attention that Terry Pratchett does. They are both comic geniuses, both very solid, imaginative writers, and both manage to be incredibly prolific. Possibly, it is because Pratchett has chosen to set his stories in Discworld, with a regular cast of characters, and Holt starts from scratch each time. But, without question, you can't go wrong with either one. Providing you like to laugh, that is.
Somehow three little hackers (disguised as three colorblind mice) slip into the castle of the Wicked Queen and come upon her just as she is running Mirrors 3.1 on her magic mirror. They watch as she runs 'Who_is_fairest.exe and sets an appointment in her calendar for doing away with Snow White. As the queen slips off the hackers attempt to take control of the operating system. No surprise, the pest control software works and the Queen returns in what is almost the nick of time. Unfortunately, the female of the three mice turns the mirror off rather than shutting it down. In this world, Mirrors 3.1 is the real operating system, and it doesn't take well to sudden power losses.
In fact, it scrambles everything in memory - which is everything. The Wicked Queen quickly grabs her backup memory bucket (think of it as a 'wet' drive), and heads off into the magic forest to find someone who knows how to pour a full system reload. And so begins the ultimate fractured fairy tale. In it, you will discover that the Three Pigs have resorted to building with concrete and anti-tank weapons. You will meet the wolf that huffs, puffs and says 'rivet.' And find out that Snow White is fond of bondage. You will even get to wonder 'What are these seven samurai doing in a dwarf tale.'
What you won't get to do is sit there, read with a grim expression, and not even utter a snicker. Tom Holt is a wizard at the quickly set up, awful pun ("two wrongs don't make us Wrights" and "good fencers make bad neighbors." He has a knack for literary sight gags and the sublimely ridiculous. His books are meant for those times when all the bits refuse to fit together and you just need to think about something else. Or when you want to get somewhat hysterical for a few hours. While this isn't Holt's very best effort (try 'Expecting Someone Taller' or 'Flying Dutch') it is, like all of his work, way better than any of the competition except Pratchett.