Renoir 
The Mad Machines of Mundara [EPUB ebook] 
The Third Book of Dubious Magic

For many years, Soviet scientists conducted experiments into strange psychic powers. Now the most dangerous of those scientists — a man with a strange and deadly secret — has his hands on unlikely wizard John B. Stewart.

Held prisoner on a tiny island, John B. has only his wits and dubious magic to help him retain his sanity — and his life.

Even if his friends can find him, to save him they’ll have to overcome ruthless enemies and the storm-lashed perils of Bass Strait.