The Perfect Plot by Carolyn Keene

Nancy Drew, a teen sleuth, travels with her friend George to Mystery Mansion, created by the late Dorthea Burden. Famous mystery authors and such, like Vanessa van Ness, arrive for a conference. But it quickly becomes more than just a conference. A fake murder, a real murder, and a theft all occur in this bizarre house full of secret passageways. I loved it because there are so many twists and turns, and it was truly mind-boggling. I encourage you to read this blood-curdling story. It's like nothing you've ever read before! Timmy W.