In this fifth book in the Key Mystery Series, Mandy and Nick are joined by Christianne and Noah on a camping trip in a California redwood forest. While panning for gold at a stream, mysterious things begin to happen. Their equipment disappears and they find gigantic footprints on the path. Is the dark figure lurking in the woods the legendary Bigfoot? After finding a key in a hollow tree called the Old Prospector, the children set out to find what it opens. They follow clues to an old, run-down cabin deep in the woods which is filled with secrets and danger. What will the four explorers find there - trouble or treasure? The Outlaw's Key, an exciting and mysterious adventure of gold-hunting, Bigfoot, and bandits of the Old West, will keep 8-12 year olds reading under the covers by flashlight!