Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wats with the vampire stuff!?!?

I thought it was a pretty damn good book overall but the whole deal with the vampire stuff just rewend it a bit. Ok, so casting a spell and summoning an evil spirit of some sort can pass as believable but these people are seniors and this guy, Josh, is worried about his ex getting drained by a vampire!! Its a bit crazy! By the way, the part where that spirt hooded guy killed everyone was totally gruesome but it was cool and I'm not a sicko or anything but thats what makes a book scary and thrilling! Keep up the otherwise great work R.L. Stine!