Encyclopedia Brown Gets His Man by Donald J. Sobol (Encyclopedia Brown #14)

A ghost who whistles... Eight stuffed penguins... An underwater car... A famous explorer's fortune... and an ldaville boy who's literally lost his marbles! 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!

Paperback, 1993

Goodreads: 4.05