The Secret - Pride Law, #1

Werelion Carlos Rivera, werewolf Declan Roberts, and human hunter Sunny Nolan are behind enemy lines in south Florida hunting a werewolf who may or may not be rogue and Sunny's missing twin sister, Jaz. The straightforward mission gets complicated when both men claim Sunny, and each other. All Sunny wants is to rescue her sister, get to know her mates better, and escape the Society unscathed to return to a simpler life.
But simple is not in the cards because Sunny and Jaz share a secret that will keep a target on their backs for the rest of their lives.