My Irresistible Earl (The Inferno Club)

is book #3 of The Inferno Club by Gaelen Foley.
==Book Description==
The Inferno Club: In public, this scandalous society of London aristocrats is notorious for pursuing all manner of debauchery. But in private, they are warriors who would do anything to protect king and country…
She has loved him for as long as she can remember...
Once, she had vowed to marry the Earl of Falconridge. Now, she vows to forget him. After he abandoned her for a life of shrouded secrets, Mara, Lady Pierson, has succeeded in keeping him away, until he appears in London unexpectedly, making her fall in love all over again.
Forced back into Mara’s life by duty, Jordan quickly stays for love. He has never forgotten this passionate beauty and never meant to break her heart. But their newfound happiness is endangered—because the Inferno Club demands much of its members, and his vital mission is exposing a deadly plot that could threaten their very lives.
(Description from gaelenfoley.com)