Maureen Johnson is the bestselling author of several novels, including 13 Little Blue Envelopes, the Truly Devious series, the Suite Scarlett series, and the Shades of London series. She has also written collaborative works such as Let It Snow with John Green and Lauren Myracle and The Bane Chronicles with Cassandra Clare and Sarah Rees Brennan. Truly Devious: A Mystery (Katherine Tegen Books) weaves a delicate tale of murder and mystery in the first book of a striking new series. And in The Vanishing Stair (Katherine Tegen Books), Maureen Johnson’s second novel in the Truly Devious series, there are more twists and turns than Stevie Bell can imagine.