G. T. Karber grew up in a small town in Arkansas, the son of a judge and a civil rights attorney. As a lifelong mystery fan, he has organized more than forty immersive mysteries in Los Angeles.

Chris Grabenstein is the multiple award-winning, #1 New York Times bestselling author of the Mr. Lemoncello's Library, Welcome to Wonderland, Haunted Mystery, Smartest Kid in the Universe, and Dog Squad series. He co-authored the acclaimed SHINE! with his wife J.J. Grabenstein as well as nearly three dozen fast-paced and funny page turners with James Patterson including the I Funny, Jacky Ha-Ha, Treasure Hunters, and Max Einstein series. He's written Audible Originals, short stories, and stage plays. Chris, the current president of the Mystery Writers of America, and his wife J.J. still live in New York City with two cats and lots of ideas. You can visit him online at chrisgrabenstein.com and on Instagram and X @ChrisGrabenstein.