Return to Etlantium: dark urban fantasy

She gave her power to a dead god. Now, she must reclaim it before he destroys the world.
Somewhere a vengeful god sleeps, bound by ancient magic to prevent him from wreaking havoc. Alaysha is the witch ordered to watch for the moment he wakes. She hopes he'll rouse peaceful so she can usher him quietly to his realm and finish her sacred duty. But Alaysha has lived centuries already. The never-ending wait has atrophied her powers and wearied her soul. Then news of a dormant volcano's eruption...