Showdown — Julia Derek

Detective Gabi Longoria has started to date a psychopath named Jonah in order to find his father. Jonah's father, Otto Stenger, is the leader of a worldwide conspiracy to replace the world's people with superhumans.

Because Jonah is getting increasingly crazy, Gabi pretends that she needs to go back home to care for her sick mother. Back home is across the U.S. where she'll be safe from him.

What she doesn't count on is Jonah offering to help by sending two of his father's doctors to the hospital. Unless Gabi wants to admit that she lied to Jonah---and no one lies to Jonah---she has no choice but to abduct the doctors and force them to do her bidding. It's the only way she'll be able to take down the conspiracy. And that's easier said than done.

NOTE: This is the final book in a four-book thriller series. The first book entitled Girl Undercover is FREE.