Penny Warner

"Penny Warner"'s middle-grade mystery, "The Mystery of the Haunted Caves," won an Agatha Award and an Anthony Award in 2002 for Best Juvenile Mystery. Her first book in the Code Busters Club series, "The Secret of the Skeleton Key," was nominated for the Agatha Award. Her books have received excellent reviews and have been printed in fourteen countries throughout the world. Warner lives in Danville, California. You may visit her online at, and brush up on your sleuthing...See more