Disarming the Baron by Lexi Post

He’s not what he seems and neither is she. A perfect mismatch?
Mademoiselle Lissette Fontaine knows she doesn’t belong among the ton, yet finds herself fast friends with many people of that status, specifically those in the Belinda School for Curious Ladies. As much as she enjoys her new friends, and the easy life of being a lady as opposed to her days of stealing food to survive, she will do anything to avoid marrying a peer, even enlisting the help of her old friend Mr. Anthony Taylour to find a wealthy middle-class spouse.

Lord Taylour, the Baron of Bellamore, is rarely what he appears because as a fourth son, he knows he’s expendable. So he uses his fortune to make the world a better place, whether it’s as a Bow Street runner, a soldier against Napoleon, or a detective for his friends among the aristocracy. Needing a weapons expert, he visits the Belinda School for Curious Ladies and is pleased to rekindle his friendship with Lissa, but he’s cautious about teaming up with her once again. After all, when last they traipsed about France, she was younger and always dressed as a man.