Book 2 of the Truly Devious series, The Vanishing Stair continues the story of Stevie, a person who is taken out of her private boarding school for her own good by her parents as she got sucked into trying to solve a mystery that put her in danger in the process. Stevie also happened to fall for David in book 1. Early in book 2, Stevie is manipulated by said boy’s dad, Edward King, who will get her back into the school if she keeps an eye on his son. Boy plus mystery still unsolved = Stevie’s perfect day. In a parallel plot, readers navigate their way back to old school Elligham, where 3 other characters slowly build the mystery of this academy. I agree with many reviewers that this old-school setting and characters could have been its own book. Who doesn’t love a good murder mystery with cliffhangers? This reviewer didn’t. I didn’t feel compelled to follow characters into the tunnels, I didn’t like how dumb Stevie acted around David and I knew there would be a book 3 so I felt like I was wading through quicksand of switchbacks between the then and now time periods. I was disappointed that this book didn’t click for me but as a freebie for my library, I can’t complain too loudly.