Everyone wonders what it would be like to be someone else for a day, but is it really as fun as it sounds? What if you couldn't get back? One day Alex wakes up to find himself in another boy's room, another boy's house. And when he goes down to breakfast, this other boy's family don't even seem to notice anything is up. It's like they think he is their son, and when Alex finally looks in the mirror, he understands why. It is ridiculous for him to claim he is some boy called Alex from London, when he is clearly here, in Yorkshire, looking and walking and talking like a boy called Philip, or Flip.

Suddenly Alex finds himself thrust into the shoes of Flip, with wealthy respectable parents who want to pretend everything is OK with their family, even though their son is having an identity crisis, a sarcastic goth of a sister, two girlfriends and an overweight, bad-tempered dog who seems to be the only one that realises something is wrong.

So if Alex is in Flip's body then where is his own body and what has happened to Flip – the real Flip – and his soul?

The last thing Alex remembers is a late night out in December and now suddenly it's June, he's lost six months and he's someone else. His mobile number is out of use, so is his email and when he calls his Mum at work he is told to leave her alone. What is going on?

Alex doesn't know what has happened, all he knows is that he needs to get back to his old body but he can't work this out on his own. Then Alex discovers Rob, who used to be Chris, and finds out that there are other people all over the world in the same situation, people who have woken up and found that they are someone else. Alex's "Flip" however, is a bit different. After doing some research into his old self, Alex discovers that he has been in a coma for the past six months ... so what is he doing here?

Alex has to make things right again – for himself but also for Flip, who deserves his own life back – while at the same time juggling Flip's complicated love life with one that he wishes he could have. But it's hard to be honest with the girl he really likes when the truth is so unbelievable.

This book is extremely gripping. It is fast-paced but still keeps you guessing and the plot is clever and unique, throwing you straight into the action right from the beginning. It's all about a normal boy who suddenly finds himself in an impossible situation, and has to find a way to get out of it pretty much on his own. Martyn Bedford is an excellent writer and captures the life of a teenage schoolboy brilliantly, with his writing style and dialogue. Alex appreciates the life he had so much more when it is suddenly snatched away from him. Every little thing he took for granted before, he longs for now. The book has an underlying message telling us to be grateful for the life we have because maybe it doesn't always seem that great, but at least it's ours.

This book is a definite read for anyone who has ever wondered what it would be like to be someone else.