Encyclopedia Brown Tracks Them Down

A tiny submarine that flies through the air...

A half-dollar worth five thousand dollars...

Some tipsy birds...

A world that fits in the palm of your hand...

And a case that turns out to be a real can of worms!

These are just some of the ten brain-twisting mysteries that Encyclopedia Brown must solve by using his famous computerlike brain. Try to crack the cases along with him--the answers to all the mysteries are found in the back!