The Missing Girl by Norma Fox Mazer

I was ready to read a book with multiple narrators, so I picked up this YA novel. A freaky man is watching five sisters, but they don't know it. The sisters tell their story and, when one of them goes missing, the girls aren't sure what to do. The entire plot revolves around the missing girl, which makes this book a quick, easy read. I didn't want to stop reading because I wanted to know the fate of the missing sister. Bland posting, I know, but the book was just a good mystery that was a welcoming breath of fresh air between zombie reads.