Rage of the Robot Rats - Amanda Brandon - Bog

An adventure school trip at Shiver Heights castle is the last thing Tom wanted to do for his summer. But he and his best friend Ella are determined to make the best of it. That is until he spots a rat! They seem to be everywhere, sabotaging their activities. Almost as if they're being controlled by someone... but who? Can Tom and Ella find out the truth behind these raging rats?