Renoir 
The Carvings of Cobbemarmoo 
The Second Book of Dubious Magic

Central Australia is big, dry, and bloody hot. For accidental wizard John B. Stewart and his friends it’s also very dangerous. They have to deal with snakebite, a bike gang, a corrupt lawyer, a vicious thug in police uniform, a stubborn camel, and the peril of the scorching desert itself.

There’s more danger in that desert than anyone realises. Like a madman who believes that a human sacrifice will give him the powers of a forgotten god.

Surviving is going to take courage, luck, a very smart cat, and some DUBIOUS MAGIC.