Maureen Johnson is the #1 New York Times and USA Today bestselling author of many young adult novels, including the very murderous Shades of London series and the Stevie Bell mysteries: Truly Devious , The Vanishing Stair , The Hand on the Wall , and The Box in the Woods . She has also done collaborative works, such as Let It Snow with John Green and Lauren Myracle (now a movie on Netflix), and several books in the Shadowhunter universe with Cassandra Clare. Her books have been translated into more than thirty-five languages. For safety's sake, she lives in New York City; the vicar cannot reach her there. Jay Cooper 's books don't normally include grisly murders, nefarious deeds, or corpses of any kind. He has written and/or illustrated more than twenty books for kids, including The Spy Next Door , The Pepper Party , and the Bots series, and has contributed work to the New York Times bestselling series The Last Kids on Earth. Currently he is illustrating a graphic novel entitled Super Atomic Wombat Girl . He's also a graphic designer of theatrical advertising, and has worked on more than a hundred Broadway musicals and plays (which have heaps of deaths).