SOLVED. Adult romance, heroine gets trained by a dominatrix in the art of domination to get close to a criminal. Hero is also there to help. Spoiler inside. [s]

[Crystal]

At the end it turns out the criminal likes to do the domination not the other way around. They had received bad Intel. The hero goes instead using a different ploy because he doesn't want the heroine to get hurt. Thanks for helping.

[Kate]

Crystal ~~
You can bump your thread every month or so. This moves your thread to the head of the folder where more people are likely to see it rather than languishing here on page 33.
Good luck!

[Crystal]

Thanks...still looking for this story.

[Lobstergirl, au gratin]

Crystal, are you still looking for this or did you find it?

[Crystal]

I recently found it! It was Born to Be BAD by Sherrilynn Kenyon.