A Dangerous Game by Malorie Blackman
Illustrated by Mike Lowery
Although Sam has a long-term illness, all he wants is the chance to lead a normal life. So he is thrilled when he finally gets his mum and dad to let him go on the school trip to the Scottish Highlands. Sam's desperate for an adventure and wants to prove to everyone that he's just as strong as his friends.
But when some of the boys from his class take a reckless risk in order to win a challenge, the trip turns out to be more dangerous than Sam could have imagined.