Old Man's Cave, Paperback

A showdown with the rat creatures and a secret ceremony by moonlight; revelations and battles: The Bone cousins are in the thick of it again
The thrilling BONE saga continues in book six. As war spreads through the valley, the Bone cousins join Gran'ma Ben and Lucius at Old Man's Cave to make a stand against the rat creatures.
But not everything goes as planned. By the end of the book, Phoney Bone is strapped to a stone altar and about to be sacrificed; Thorn is lying lifeless nearby; and the rumblings of an earthquake suggest that the Lord of the Locusts is about to be released. Fone and Smiley Bone must do something drastic to save their friends.