Young Adult Revisited

This is so random, but I literally forgot that I had this book! We were going through our garage last weekend and found a few boxes/bags of stuff that were in my old car and got transferred into my dad's car, which I borrowed while mine was in the shop. When I ended up driving a completely different car (no saving my old baby LOL), the boxes/bags got moved around a few times. It actually had a sticker from the thrift store on it that shows I bought it in 2012 along with some glasses, a Care Bear, and some other books, including a Fear Street book and a Sweet Valley University book. So it's a lazy day in Stoneybrook. Kristy is sitting for Karen and David Michael and both are bored out of their minds. They suggest that they investigate that creepy/cool old house in the woods. Kristy isn't too keen on the idea, but she really does want to check things out too. Right after they start up the driveway, they hear what sounds like a gunshot. Sergeant Johnson pops up, ask...