Beast Quest: The World of Chaos Series by Adam Blade

Tom's most challenging Quest awaits! He must rescue his mother from devious Wizard Velmal by finding six potion ingredients, all guarded by the terrifying Beasts of Kayonia. Can Tom and his companions brave the Dead Desert and conquer Komodo the Lizard King...?

Tom now seeks the second potion ingredient that will free his ailing mother from Wizard Velmal's fiendish sorcery. He must battle against Muro the Rat Monster, who can command the vermin of Kayonia to do his wicked bidding!

Evil Wizard Velmal holds Tom's mother captive, and death creeps closer with every moment. To rescue her, Tom still has to find four potion ingredients. Standing in his way is Fang the Bat Fiend -- can Tom destroy this foul creature, or will he finally meet his doom?

The land of Kayonia is descending into chaos! Everywhere Tom looks he sees decay and destruction: all the work of Wizard Velmal. Tom must now face not only Murk the Swamp Man, but also a deadly assassin sent to kill him...

The fifth book in the sixth series of the exciting adventure stories that are as gripping as a computer game! Great for boys, with a huge collectability factor bolstered by the collectors' cards in the back of the books, and links to an excellent interactive website.

Tom has nearly reached the end of his most challenging Beast Quest! The fate of his mother and the land of Kayonia depend on him and his faithful companions. Can he defeat the deadliest of his foes, Vespick the Wasp Queen, and wicked Wizard Velmal?