James by S. Cinders

Ella and James have been prisoners of a madman ever since they were stolen from their mothers at birth. They were raised in a top-secret facility and genetically modified to be the fastest, strongest, and most powerful Lycan assassins on Earth.
After escaping, they find themselves thrust into the outside world with no life experience and only one another to rely on. Suddenly, they are faced with choices they are ill-equipped to deal with: lust, alcohol, crime, and murder… to name but a few.