Under Padlock and Seal is a children's adventure novel by Harold Avery, first published in 1905. The story follows siblings Elsie, Ida, Guy, and their cousin Brian as they investigate the mysterious 'Uncle Roger's Box,' sealed for twenty years. Their curiosity leads them through a series of suspenseful and whimsical events, challenging their bravery and problem-solving skills. The book captures the imaginative spirit of early 20th-century juvenile fiction, focusing on themes of inheritance and the allure of mystery.
