James Thomson 
Tarmea [EPUB ebook] 

For generations now, Toli’s island has known nothing but peace and prosperity. But suddenly, the son of an old enemy, who holds this royal lineage after the demise of his father, returns to wreak havoc and enslave the occupants of the island. However, unknown to themselves, the peaceful islanders have a secret ally, a powerful ally: through lucky coincidence and the attention of their allies, the catalyst for a new empire is created. First, the invader must be dealt with. Sorcerers, lords and mages all vie for power against each other, but they have not reckoned with this approaching, irrepressible force. With plots, subplots, love, hate, genius and characters who surprise, Tarmea shows the forming of an unintentional empire, one that must end this new threat forever.