Monty the Marmoset is like no other computer program that Rod and Sean have ever seen before. When Monty gets loose on the school's computer system, all sorts of strange things start to happen...Will the boys be able to capture him before it's too late?

"Frank is the world's worst musician, until he meets a mysterious old man who sells him a battered guitar. The guitar has the power to make him a superstar - but what does it, and the old man, want in return? Will Frank last long enough to enjoy his fame?"--Back cover.

Ben is sent to Miss Sharple's school for difficult children and experiences her evil punishments, horrid lessons and terrible food. But he soon discovers that she has something even more sinister planned for her students.