Martin and Nine Fools(1966)

Martin and Nine Fools is a Czech crime film following Captain Martin from the police's child department as he travels to Znojmo to investigate stolen toys discovered in the town's underground passages. Local officers suspect two elementary school pupils, Exner and Mandlík, but Martin grows skeptical of their guilt. When a self-service shop is robbed and a tobacco store loses a shipment of imported cigarettes, the case deepens. Martin questions the children, examines the crime scenes, and explores the subterranean tunnels to uncover the real culprits behind the thefts. The film balances detective work with doubt, as Martin's instincts challenge the easy answers his colleagues have already accepted.