Moonlocket – The Cogheart Adventures (Paperback) Peter Bunzl (author)

When infamous escapologist Jack Door breaks out from Pentonville Prison, he sets out for the town of Brackenbridge, determined to find his missing treasure – the Moonlocket. But when Lily and Robert unwittingly find themselves caught up in Jack Door’s search, they discover that Robert’s history holds the secret to the Moonlocket’s whereabouts..