2 - P - Livro em excelente estado de conservação: miolo, corte, borda, lombada e capa excelentes. Sem grifos, anotações, rasuras, assinaturas, dobras, páginas rasgadas, faltantes ou com furos de traça. Triggered by the disappearance of a brilliant young professor, this mystery takes the Hardy boys first to Kenworthy College, where they find a puzzling message on an examination paper. But then, a new clue is unearthed that sends the young detectives to the Honeycomb Caves. After many dangerous encounters, Frank and Joe discover a powerful searchlight in one of the craggy caverns along the seacoast. In the brilliant white glare of the searchlight, the startling secret of the caves is dramatically revealed. Assunto: Infanto-Juvenis
