Carnal Innocence — Julie Miller

His business...
FBI investigator Sean Maddox needs a woman -- badly. His latest assignment has him poised to infiltrate a hedonistic island resort where anything is possible -- including murder. But he can't go in alone. So when he discovers that his arranged escort has taken off, he's in trouble. Until he decides to proposition her roommate, Caitlin -- and discovers what trouble really is....

...would be her pleasure!
Caitlin McCormick is a good girl...with a weakness for bad boys. So when Agent Sean Maddox shows up on her doorstep, needing her help, Caitlin can't resist -- him or his offer. For the first time, she has the chance to experience excitement, danger...and raw sexual desire. And she's determined that by the end of her adventure, she'll know, firsthand, just how bad Sean really is....