London, 1960.

Living in the New Forest with their cold-hearted grandmother, twins Maisy and Duncan are neglected and unloved.

So when Duncan fails to come home after exploring the woods, no one – least of all his grandmother – appears to care.

Yet Maisy refuses to give up.

Though she doesn’t know the woods well, she knows someone who does. The strange old woman who lives at their heart . . .

Dare Maisy enlist the help of the woman in the wood?

And what will she find if she does?