White Haven Hunters Books 4 - 7. White Haven Hunters, #2

They thought they knew their enemy. They were wrong - about everything. When an ancient Sumerian tablet rewrites everything the Nephilim thought they knew about their own history, Shadow and Gabe find themselves pulled into something far bigger than treasure hunting. Black Cronos - ruthless, alchemically enhanced, and hunting the ultimate warrior - has them in its sights. And behind Black Cronos lurks something older and far more dangerous.
Four books. Four escalating battles across deserts, Scottish abbeys, Templar castles, blood-soaked French châteaux, a Cathar citadel crowned in snow, and the crypts of Florence. The Nephilim are stretched thin, allies are compromised, and the enemy refuses to stay buried. As JD edges closer to unlocking the Emerald Tablet's ancient secrets, and a Fallen Angel's corrupting jewels begin to surface across Europe, Shadow and her team face a reckoning centuries in the making.
Not everyone will walk away unchanged. The concluding four books in the White Haven Hunters urban fantasy series - ancient enemies, devastating betrayals, and a finale that has been building since the beginning.