Freefall (New Reality Series, Book Three) by Bella St. James

Clancy Reed knew the rules of the Underground. But when the beautiful Jezebel banged against the makeshift medical facility door, begging for sanctuary, he not only crossed the line but totally obliterated it behind him. He should have called for a transfer crew and immediately sent her out of town. But something beyond her beauty and artificially enhanced sex appeal spoke to him.

When Nadine Cooper seized an unexpected opportunity to run from the government that used her as a sex spy, her only concern was leaving the past behind. The last thing she expected when she arrived at the gritty warehouse was a field operation that made her feel normal for the first time in her life – and a man whose kind hands and caring voice touched something deep inside her.

Their acquaintance should have gone by protocol: Twelve hours of recovery and then a permanent separation. But when the enemy comes to their door, their only choice is to go on the run as the world around them drops into a freefall.