AR points for Charlie Bone and the invisible boy?

Charlie Bone and the invisible boy

is the third book in the series. It starts out when Benjamin comes

over to Charlie's house and asks if Charlie can take care of his

dog while he is in Hong Kong.

When Charlie goes off to school he

finds out About a Boy who is invisible and trapped in the school.

There is a snake that wrapped its self around the boy. The only

part of the boy that is not invisible is a toe. Charlie and his

friends help the boy and by the end he escapes by putting a cap on

his toe that looks like a spider.