From the blurb on the back cover:
"They're back... and this time they're hungry.
The good news: Bobby survived her unreal school trip. The bad news: her best bud Smitty is missing, there are undead everywhere and they're getting hungrier...
It's a no-brainer. Somehow she must find some living frinds - and the antidote- before everyone's toast."
Just the sort of story for the lengthening dark nights and the lead up to Halloween!!