Thea Knight loves a spot of mischief. She especially loves her current mischief: masquerading as her sister, while finalizing her scheme to expose the dastardly knaves whose lies ruined her life. Then big, bad-tempered Lord Luxborough upends her game by maneuvering her into marriage. But it's her sister’s name on the license, so the marriage won’t be valid. Thea’s idea? Keep pretending to be her sister until she can run away.

War hero Alistair Carsington really really loves women, and his romantic impulses have landed him in nearly as much danger as the Battle of Waterloo. To avoid his usual temptations and perhaps even repay the friend who saved his life, he's exiled himself to a place far from civilization - Derbyshire - in winter! Fate laughs at his good intentions and drives him straight into conflict with Miss Mirabel Oldridge, his match in tenacity, intelligence, and deviousness - who also happens to be wildly irresistible.

The last thing Amelia Kennington wants is to participate in the London Season. But the daughter of a duke is not afforded such opinions. She must put forth a subdued facade, but beneath it is a well-hidden fire that surfaces only when provoked—such as when an overly familiar gentleman startles her and she falls into the Serpentine.

As the city prepares to celebrate Queen Victoria's golden jubilee, Veronica Speedwell is marking a milestone of her own. After burying her spinster aunt, the orphaned Veronica is free to resume her world travels in pursuit of scientific inquiry - and the occasional romantic dalliance. As familiar with hunting butterflies as she is fending off admirers, Veronica wields her butterfly net and a hatpin with equal aplomb, and with her last connection to England gone, she intends to embark upon the journey of a lifetime.

American heiress August Crenshaw has aspirations. But unlike her peers, it isn't some stuffy British lord she wants wrapped around her finger - it's Crenshaw Iron Works, the family business. When it's clear that August's outrageously progressive ways render her unsuitable for a respectable match, her parents offer up her younger sister to the highest entitled bidder instead. This simply will not do. August refuses to leave her sister to the mercy of a loveless marriage.