The Djinn Wars (4 Book Series)

From Book 1: When a fatal fever nearly wipes out the entire world's population, the survivors of what became known as "the Dying" believe the worst is in the past. Little do they know…

In the aftermath of the Dying, survivor Jessica Monroe searches for sanctuary in a world unlike any she's ever known before. As fear and isolation envelop her, Jessica encounters the sensitive and helpful Jace, who she believes is another survivor.  But Jace has a past and secrets of his own that's he not ready to disclose. Soon Jessica realizes that the destruction of humanity might actually be the first step in a larger, more complicated plan -- a plan that may very well involve her. Struggling to discover her role in a terrifying new world where everything has changed, she must decide who she can trust. But is the price for that trust just too high?