Tempt Me by Caroline Cross

Ex-Army Ranger John Taggert Steele couldn't believe the pretty little mess he was in. The case should have been easy - track down runaway murder witness Genevieve Bowen and return her to police custody.

But somehow he ended up shackled to the sassy brunette's bed - and rather than thinking how to get out of it, he was sorely tempted to get Genevieve in it so he could teach her a much-needed lesson in domination. Because one way or another he'd regain control, and show her what happens when you play with a desperate man's heart.