Nephilim Chronicles Series by G. Miller

Strength is everything to Achilla Johnson, and weakness is a sin. She is a Nephilim-a rare human subspecies with superior intellect and athletic ability-and her feats of strength either amaze or frighten her peers until the CIA recruits her at the young age of sixteen... moreStrength is everything to Achilla Johnson, and weakness is a sin. She is a Nephilim-a rare human subspecies with superior intellect and athletic ability-and her feats of strength either amaze or frighten her peers until the CIA recruits her at the young age of sixteen. As she investigates international criminals who threaten the United States, Achilla must contend with her country's greatest national security threat, Ailina Harris; a Nephilim who believes she is destined to rule over the human race. Ailina is also Achilla's mother. When the trauma of her childhood and the challenges of her adult life collide, Achilla must choose whether she will follow in Ailina's footsteps or forge her own path, and it will take more than raw power to make the right call when the time comes. One way or another, Achilla will find out how strong she really is. less

Achilla Johnson knows how strong she is, but so does everyone else. She has grown from a teenage girl in a small town to a woman who travels the country, finding a fight wherever she goes. Her opponents get stronger, but Achilla remains undefeated. When Achilla's enemies can't beat her, they go after her family. Now all the Johnsons are vulnerable, and she must protect them at all costs. To do that, Achilla must become The Mantis. And when a mantis strikes, it doesn't miss.