This is a fun and lively story about a boy who can rewind a little time if things go pear-shaped, the mishaps he prevents and the possible perils of his new-found skill.
Alex is given a laptop which provides him with the means to go back to a point in time before the trouble began, while remembering what happened. He is able therefore to avert disasters, which he does admirably. Although basically a good boy he is also able to do naughty things he'd never normally dare to do without fear of retribution and safe in the knowledge that he can go back in time and undo any harm, that he won't repeat the bad behaviour a second time around, and that noone else will have any memory of the bad behaviour because it was rewound. What a great idea!
"Ctrl-Z" is a fun, light hearted read that will appeal to all children from about 6+, with a great tales of an accident-prone best friend Callum, exploding fireworks, and a foot-stuck-down toilet incident. However this isn't purely a comical book. There's also a bit of a knot in your stomach with suspense as you read in case the Cntrl-z mechanism doesn't work this time (and once or twice it nearly does go wrong).
There are also real nuggets of wisdom within the story. For example, Alex's parents tend to argue and Alex sees how this parental tension can be diverted simply through better communication, and he learns too how bad you feel when you see the genuine hurt and bewilderment caused by a brilliant prank (spraying the class swot with a fire extinguisher) which seemed so funny at the outset. In addition the underlying theme of the book is that making mistakes is not a bad thing to do and nor should you feel ashamed - mistakes are often unavoidable, it's how we all learn, and you shouldn't give up because of a mistake. Great lessons for life. Great book.