My Favorite Thief — Karyn Monk

THE LAST THING HE EXPECTED WAS TO STEAL HER HEART...
She should have been terrified, but Charlotte surprised even herself when she found herself helping a masked jewel thief. Now, after impulsively escaping in a waiting carriage, she finds herself alone with a dangerously seductive stranger whose identity remains a mystery that could steal not only her heart -- but her life.

...UNLESS IT WAS THAT SHE'D STEAL HIS
The robbery was a disaster but the danger was real, and the last thing Harrison Payne, earl of Bryden, planned was to be saved by a willowy, unconventional beauty. Already captivated by her courage and sensuality, Harrison is equally intrigued by her clumsy attempt to blackmail him. But Charlotte is hiding a past -- and a secret -- as dangerous as his own. And as an enemy seeks to destroy them both, they will abandon themselves to the passionate destiny that has drawn them together...and a chance at a love worth risking everything for.