Spies, Lies and Unbreakable Sibling Ties.

Nathan and Aleasha are on the run, and they're nearly out of time. They need to discover who has been sending them information only their dead father knew, and why. And they need to do it before Simon assassinates them.

Can these sibling spies follow the clues that shows them who their father really was, why he trained them to be spies, and why Simon is out to exterminate the Summers family? Or will Simon be the winner who takes all?

If you like high stakes action adventures filled with mystery, intrigue, romantic suspense, and bone-cracking fight scenes, you'll love the 5th installment of the Unleashed thriller series.