CHRIS GRABENSTEIN is the multiple award-winning, #1 New York Times bestselling author of the MR. LEMONCELLO, HAUNTED MYSTERY, 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 audio book 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.

Peter Lerangis's books have sold more than 6.5 million copies and been translated into 35 languages. His latest work includes the time-travel THROWBACK trilogy and the MAX TILT trilogy (a fresh take on Jules Verne adventures). He has had nine N.Y. Times bestsellers: all five books of THE SEVEN WONDERS series; and THE SWORD THIEF, THE VIPER'S NEST, one-fourth of VESPERS RISING, and THE DEAD OF NIGHT in THE 39 CLUES series. His work also includes the YA novels SOMEBODY, PLEASE TELL ME WHO I AM (written with Harry Mazer and winner of the ALA Schneider Award and a Best Fiction for Young Adults book), SMILER'S BONES (a N. Y. Public Library Best Book for Teens); the YA thrillers WTF and LOST GIRLS; the WATCHERS and SPY X series; and the ANTARCTICA duo. He's also performed on Broadway, run a marathon, rock-climbed in Yosemite during a 6.1 earthquake, and, with his wife, sprouted and grown two sons in NYC. (For a longer bio, see http://peterlerangis.com/about-peter/bio/.)

A few interesting things that Stuart Gibbs has done:

Worked at a zoo

Researched capybaras (the world's largest rodents)

Climbed Mount Kilimanjaro

Cage dived with great white sharks

Faced down a charging elephant

Swum with penguins in the Galapagos

Ice-climbed a glacier in Patagonia

Visited the cockpit of the Space Shuttle Atlantis

Helped rescue sixteen children from drowning off the coast of Israel

Written a few movies that actually got made (See Spot Run; Repli-Kate; Showdown)

Worked on a few animated movies (Anastasia; Open Season 3; Mickey, Donald, Goofy: The Three Musketeers)

He is currently at work on several more books -- and the screenplay for Spy School the movie. You can learn all about them at www.stuartgibbs.com

Fred Rexroad lives in Northern Virginia and writes mystery stories. His life has been an eclectic array of locations and interests. He’s lived in the Northeast, Mid-Atlantic, West Coast, Midwest, South, Europe, and on a boat. He’s printed cigar boxes, owned a magic store, flew a plane, built an ultralight, worked as a self-employed statistical analyst, photographed oil spills and shifting sandbars from a helicopter for the US Coast Guard, taught Management Science at Wright State University, solved logistics problems for the US Air Force, trained NATO personnel in the use of computer programs, wandered unarmed in warzones, was the top Operations Research Analyst at the US Department of Education, did top-secret analysis for the Joint Chiefs of Staff, and found some time to write stories. His most notable is the middle-grade Whiz Tanner Mysteries series including a Whiz Tanner short story included in the HarperCollins published middle-grade anthology Super Puzzletastic Mysteries from the Mystery Writers of America (he also wrote software for college finance textbooks for Harper & Row, the prior incarnation of HarperCollins.) He's still trying to decide what he wants to be when he grows up.

Fleur Bradley is the author of many mysteries for kids, including Daybreak on Raven Island and Midnight at the Barclay Hotel (Viking).

Midnight at the Barclay Hotel is nominated for the Reading the West, Agatha and Anthony Award, and has won the Colorado Book Award and SCBWI Crystal Kite Award. It's also on the Rhode Island Children's Book Award list and recently won Florida's SSYRA. Daybreak on Raven Island is nominated for the Anthony and Agatha Awards, recently won the Colorado Authors League Book Award for Best Juvenile, and is on the 2024-25 Texas Library Association's Bluebonnet Award List.

Fleur regularly does school and virtual visits, as well as librarian and educator conference talks on reaching reluctant readers. Originally from the Netherlands, she now lives in Colorado.

Bryan Patrick Avery is an award-winning poet and author of more than twenty books for children including the middle grade collective biography, BLACK MEN IN SCIENCE, illustrated by Nikita Leanne, and THE FREEMAN FIELD PHOTOGRAPH, illustrated by Jerome White. Bryan’s other publications include the middle-grade story, “The Magic Day Mystery”, which appears in SUPER PUZZLETASTIC MYSTERIES, the Jake Maddox JV Mysteries OFF BASE and SOCCER SUSPICIONS, the early chapter book series, MR. GRIZLEY’S CLASS, illustrated by Arief Putra, and the picture books EARL LEARNS A LESSON and MAX’S MAGIC CHANGE, both illustrated by Roman Diaz. He is the 2021 recipient of the SCBWI Work in Progress Award for his chapter book mystery THE ROBOT IN THE LIBRARY.

Bryan serves on the Board of Directors of the Northern California Chapter of Mystery Writers of America and is an Amplify Black Stories Fellow, a joint program presented by the Brown Bookshelf and the Highlights Foundation.

He lives in Northern California with his family.

Lamar Giles writes for teens and adults across multiple genres, with work appearing on numerous Best Of lists each and every year. He is the author of the acclaimed novels Fake ID, Endangered, Overturned, Spin, The Last Last-Day-of-Summer, Not So Pure and Simple, and The Last Mirror on the Left as well as numerous pieces of short fiction. He is a founding member of We Need Diverse Books and resides in Virginia with his wife.