Eleven-year-old Gilbert, self-styled private eye, takes on his toughest case when he finds a duck in the elevator of his housing project. In this easy-to-read mystery, "the solution is credible, the plot is fresh, the style casual and natural."--Bulletin, Center for Children's Books.

Polly Berrien Berends is the author of children’s stories, including Ladybug and Dog and the Night Walk, and also several book for adults, including Whole Child, Whole Parent and Gently Lead: How to Teach Your Children About God While Finding Out for Yourself. She lives with her husband and two sons in Hastings-on-Hudson, New York.