All Her Lies — Jessica Sorensen

Three years ago, a night at a party ruined mine and my sister's lives. I try to move on and forget, but my sister's downward spiral is a constant reminder of what happened. Still, I live my life as normally as I can. I attend college and even start spending time with Wylder St. Claire, a mysterious guy who attends my school.I have one rule, though, to keep my head in the present: never go to parties. But one night, my friend convinces me to go to one with her, and a woman at it goes missing. A few days later, so does my sister. There are similarities in how they vanished, and I can't help wondering if their disappearances are somehow connected. As I start searching for my sister, I discover information about Ivy that may lead to an answer about what really happened to her.