It's hard to save the world when you are in jail. Dantar and Velza, children of the warlock Calbaras, need to escape from jails six hundred miles apart to stop their father unleashing a catastrophically dangerous spell. Both will soon learn that they are not just special, they are also very dangerous.

When two of Australia’s most popular fantasy authors collaborate, The Warlock’s Child weaves a new and exciting brand of magic.

The Invincible has been attacked, and all seems lost. Dantar’s only escape from his enemies is through the foul-smelling sewers of Savaria. Velza’s plans to save him are soon thwarted by three enormous dragons threatening to set fire to the city. Can Dantar and Velza deliver the city from danger?

Although Dantar is able to shapeshift into dragon form, he still thinks like a rebellious teenager. His sister Velza has been given the ultimate gift by the dragons of Dracondas – the mind of a dragon. Now they must combine their gifts to stop the most powerful warlock of all time from casting his doomsday spell.

Not since Garth Nix and Sean Williams joined forces has there been such a great collaboration! The warlock Calbaras wants to revive the ancient, forbidden magic of dragons, and his son Dantar is vital to his plans. Dantar is on the run in an enemy kingdom, unaware that he is so important. Worse, his sister Velza is now working for the enemy king.

Calbaras has knowledge that the dragons of Dracondas desperately want. As payment, they are willing to grant him his wish to become the greatest warlock of all time.

But can Calbaras handle this power? Or will it ultimately destroy him?

There is no lower rank than cabin boy on the warship Invincible. But Dantar knows he is important, because anyone who threatens his life gets turned into a pile of ashes. His older sister Velza is a shapecasting warrior, in a world where only men fight. Until now. Together they must solve the mystery of broken magic and escape the dragon.