Sobol, Donald J.

Ten mysteries solved by Leroy "Encyclopedia" Brown are given in a separate section challenging the reader to match wits with the ten-year-old mastermind of Idaville's war on crime.

Encyclopedia Brown, brilliant fifth-grade amateur detective, solves ten crimes. The reader may match solutions with those at the end of the book.

Ten cases that involve the reader's crime-solving participation present the remarkable boy detective working on his own and helping his police-chief father with Idaville's more serious problems.

Encyclopedia Brown, Idaville's ten-year-old "Sherlock Holmes," solves ten mysteries.

The ten-year-old detective continues his war on crime in Idaville through ten more cases, for which the reader is invited to guess the solution before it is revealed.

Encyclopedia Brown, boy detective, solves ten more mysteries. The solutions are given at the end of the book.