Skeleton Key: Perilous Poems

by Mark Zahn, Katie Aguado (Illustrator)

101 pages, Paperback

Published May 4, 2025

About the author

A native of Webster City, Iowa, Mark Zahn graduated from Iowa State University with a degree in Art and Design. He currently resides in Minnesota where he works as a graphic designer. Mark spent much of his formative years reading The Three Investigators, and he still enjoys putting his personal vision of them to paper in both words and illustrations. To date he has written five Three Investigators fan-fiction e-books, and several short stories.