When freshly out of the Order's remote Scottish training facility, new agent Jordan Lennox vows not to let his duties to the Order eclipse the everyday enjoyment of the very lives they are sworn to protect. He will not let it become his only reason for living. When young Mara's clever wit and beautiful form enthrall him at a country house party, he longs to stay with her and learn if they can build a life together. Unfortunately duty calls and he is swept away on his first assignment within the intricacies of the highest governments in Europe.

At seventeen, Mara is in an untenable situation. Her cruel and disparaging mother wants a good marriage in the family, regardless of the cost to Mara's happiness. In despair over hearing nothing from Jordan despite his professed feelings, she escapes her horrible home into a loveless union with a Lord Pierson who wallows in dissipation as the years pass.

Twelve long years later, the war in Europe is over and Jordan Lennox, Earl of Falconridge has returned to England, still working for the Order. Mara Bryce, Lady Pierson is now the widowed mother of two-year-old Thomas, the joy of her life. When their eyes meet across the floor of Christie's auction house, strong feelings flood back, but they have more to do with anger than the love that once existed between them.

Despite himself, Jordan softened toward Mara until rumors of her liaison with the Prince Regent reached his ears. She has not matured in the way he had hoped, she still seems a careless flirt and not a woman who can be trusted with his secrets, or those of the Order. When Mara's association with Prinny brings her to the notice of the Prometheans, he is ordered to use their previous connection to bring him into the inner circle and foil their evil machinations.

Foley raises sensuality to new heights as she continues the overarching storyline that ties the three books of the Inferno Club series together, while exploring the main love story between Mara and Jordan. The book's historical setting is well-utilized, particularly the uproar of protests and unrest following the end of the war. Flashbacks to the house party where Jordan and Mara met twelve years prior to the main story line are also handled well, enriching the present-day encounters. The plot is tightly written with intriguing twists and turns leading to an amazing and thunderous conclusion. I particularly love that all Gaelen Foley's heroines, no matter how ladylike and untried some of them appear to be at the start of the story end up as major players in the conflicts with the Prometheans. MY IRRESISTIBLE EARL is book three of the series, and I think the best yet.