London has a problem - one involving ghosts, spectral and other apparitions of the not-so-alive variety and the only ones who are able to feel, hear or see a ghost's presence are children. That's where Lockwood & Co. come into play. They're a psychic detective agency run by teenagers that takes on ghostly cases in order to make London a better, safer place. No job is too big or too small for them. In this case, Lockwood & Co. takes on one of the most haunted houses in all of England in an attempt to save their agency from bankruptcy and uncover the culprit of a 50-year-old murder case. I thoroughly enjoyed this book. It's funny, witty and slightly terrifying (even from an adult's perspective). I recommend The Screaming Staircase to anyone who's looking for good entertainment and a good scare.