The Siren (Laments of Angels & Dark Chemistry) (Volume 1)

"A flawless blend of sci-fi, YA fantasy, supernatural events, romance, adventure, action, suspense and intrigue ... The Siren - Laments of Angels & Dark Chemistry - is a one of a kind young adult story and the start of a truly captivating series." - Readers' Favorite     Two men tied to her irrevocably. One offers life disguised as death; the other leads to death with unfathomable love. Her choice decides whether the world turns or ends.   Lucienne Lam, born to rule as the last of the Sirens, is running out of time. If she fails to find the TimeDust, an ancient power, her enemies will have their wish--her head on a spike. And she'll never know the love promised by Vladimir, a fierce warrior of the Czech royal bloodline.  Except Ashburn, a genius 'farm boy,' has found the TimeDust first, and its power binds Lucienne to him. She must convince him to sever this forced bond so she can return to her first love. But breaking the link seems insurmountable when the TimeDust launches its own ominous agenda and the two men prepare to duel to the death over her.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Laments of Angels & Dark Chemistry series - Will it be Us or Them?
Though packed with adventure, explosions, and romance, this series isn't about action or entangled love interests. At the heart of The Laments of Angels & Dark Chemistry series is the very survival of humankind. 

I left clues on the mysteries of human origin, evolution, and ancient civilizations and wars throughout the first three books, but you'll have your answers in the fourth and last installment.Long ago, Earth was filled with wars between more advanced species and wars we fought among ourselves and against them. Our ancestors called the superior race "the fallen angels," who insisted they were the first Earth natives. 

As humankind increased in numbers and became a new kind of predator, our conflict with the angels could no longer be settled. Human spirits could not accept the role of "inferior race." Our ancestors chose to die free than live on their knees, and so they devised a weapon and drove the angels into the space. The cost was deadly--numerous brave men and women perished, and by turning back time, destroyed all technology and every advanced civilization.

Now millions of years have passed. 

Humans stand hesitantly at the threshold of a quantum evolution, but the race we exiled has found a way to wage a new war against us. They've upgraded their magical powers and technology beyond our perception. They're coming to take back Earth. 

Unfortunately, the weapon our ancestors deployed has been lost to us. We don't know anything about ancient warfare or our secret history. We don't have the slightest idea that we're facing extinction. 

Our only hope rests with Lucienne Lam, the last and most powerful of the Sirens, who leads her Sphinxes nation in the fight against the returning angels. She will stand with the last of us to save our planet.
In the end, only one race can have Earth. Will it be us or them?