As Mary explores the gardens, the robin draws her attention to an area of disturbed soil. Here Mary finds the key to the locked garden, and eventually she discovers the door to the garden. She asks Martha for garden tools, which Martha sends with Dickon, her 12-year-old brother, who spends most of his time out on the moors. Mary and Dickon take a liking to each other, as Dickon has a kind way with animals and a good nature. Eager to absorb his gardening knowledge, Mary tells him about the secret garden.