Thugwallop: Volume Two of the Terravenum Chronicles (Hardcover) (ISBN-13: 9781958072080)

After Ozzie and Alex rescue their grandfather from the clutches of warrior librarians, they discover their adventures in Terravenum are only beginning. Stone Hunting isn't easy-especially when petulant Dark Lords, curmudgeonly hermits, and a Hack Tech gladiator sport stand in the way.

Meanwhile, their father Humboldt has problems of his own. After seven years in captivity, he's sent on a mission with the worst partner imaginable: Skhaar the Annihilator, the brute who stole his freedom. Failure means death, but success spells disaster.

Ancient prophecies, skulking perils, and monstrous denizens of the deep await the Forsythes. Good thing Grandfather brought his cricket bat.