My Scandalous Viscount (The Inferno Club)

is book #5 of The Inferno Club by Gaelen Foley.
==Book Description==
Meet the courageous men of the Inferno Club as they face their greatest challenge yet: marriage!
Sebastian, Viscount Beauchamp lives by a code of honor, and now honor dictates he must marry Miss Carissa Portland. He has no regrets over stealing a kiss from the adorable little busybody—a fitting punishment for putting her delectable nose in where it didn’t belong. But now, caught in a compromising situation, he knows he must make her his bride. He’s faced danger before—but nothing like this! Carissa is not a gossip—she’s a "lady of information." And all she was trying to do was warn the rakehell Beauchamp away from an irate husband.
(Description from gaelenfoley.com)