Quick, fun for younger readers

I read Attack of the Shark-Headed Zombie by Bill Doyle and it was quick fun meant for younger readers, especially boys.  It is the adventures of Keats and Henry as they try to earn money from the mysterious Mr Cigam to replace the bikes they ruined.  They realize something is not as it seems when one item on their to-do list is to "battle the shark-headed zombie."  The I pictures really add to the action..what could be worse than a shark? One that can hop on land on it's back fin.  Can the boys not only defeat the monster, but also escape the magical house? Will they earn enough to get tier bikes back?  It's worth the read to find out.