Chris Grabenstein is the multiple award-winning, #1 New York Times bestselling author of the Mr. Lemoncello’s Library, Haunted Mysteries, Welcome to Wonderland, Smartest Kid in the Universe, and Dog Squad series. He also wrote The Island of Dr. Libris, Shine! (with his wife, J.J.), the picture book No More Naps!, and many, many other books, plays, and audiobook originals. Chris and J.J. Grabenstein live in New York City with two cats and lots of ideas. You can visit Chris at chrisgrabenstein.com.Stuart Gibbs is the author of the FunJungle series as well as the New York Times bestselling Spy School and Moon Base Alpha series. He has written the screenplays for movies like See Spot Run and Repli-Kate, worked on many animated films, and developed TV shows for Nickelodeon, Disney Channel, ABC, and Fox. Stuart lives with his wife and two children in Los Angeles. You can visit him online at stuartgibbs.com.Lamar Giles writes for teens and adults. He is the author of the Edgar Award finalists Fake ID and Endangered as well as the critically acclaimed Overturned, Spin, and The Last Last-Day-of-Summer. He is a founding member of We Need Diverse Books and resides in Virginia. Visit him online at lamargiles.com.Bruce Hale has written and/or illustrated over sixty books for kids and is the author of the Clark the Shark series; the award-winning Chet Gecko Mysteries series; Snoring Beauty, one of Oprah’s Recommended Reads for Kids; and the School for S.P.I.E.S. series. In his free time, Bruce enjoys hiking, watching movies, and making music. He lives in Santa Barbara, California, with his wife, dog, and many hats. You can catch him online at brucehale.com.Peter Lerangis is the author of more than one hundred and seventy books, which have sold more than six-and-a-half million copies and been translated into thirty-five different languages. These include the five books in the New York Times bestselling Seven Wonders series, The Colossus Rises, Lost in Babylon, The Tomb of Shadows, The Curse of the King, and The Legend of the Rift; two books in the 39 Clues series; and the Max Tilt and Throwback trilogies. He lives in New York City with his family.Taylor Whitesides always wished to be an author. Somehow he accomplished it without the help of a genie and wrote the acclaimed Janitors and Wishmakers series. When he’s not writing, Tyler loves eating good food, playing drums, and fishing. He lives in northern Utah with his wife and son. Visit him online at www.tylerwhitesides.com.

"Engaging anthology of snappily paced capers entailing codes, ciphers, and math and science puzzles.”  — Publishers Weekly"An engaging addition to a school library collection, especially one where middle grade mysteries, puzzles, and mind teasers are in high demand." — School Library Journal