Sara Fielding is a prim and proper gentlewoman, a writer who creates dreams with her pen. Yet, her curiosity draws her away from the safety of her country cottage into the thrilling, dangerous world of Derek Craven—a man of substantial wealth and the proprietor of London's most exclusive gambling house.

Derek, a man who rose from the depths of poverty, is now faced with the necessity of allowing Sara into his world of fluctuating fortunes, with her impeccable manners and exasperating innocence. However, Sara possesses an unexpected strength and sensuality that captivates Derek beyond his control. In a place where shadows conceal imminent threats, a supposedly meek 'mouse' can evolve into a stunning enchantress, and a hardened gambler can be profoundly affected by the intensity of passion and the prospect of love.