A huge footprint in the soft earth . . . counterfeit money in a bird's nest . . . threatening letter . . . an exploding toilet . . . a missing silver dollar . . . and a stolen newspaper clipping that could be valuable! These are the only traces left at the scene of ten brain-twisting crimes. But it's that Encyclopedia Brown, boy super sleuth, needs to solve them.

Answers are in the back, but can you solve the mysteries first?