Larissa Quinn travels directly from Miss Simmons' Seminary to the wilds of Westmoreland to care for her elderly aunt. After the day-long journey, the only place for the weary travelers to sleep is the barn of an over-booked inn with only a single vacancy. Larissa, who has no intention of sleeping on a pile of straw, steps forward, claiming to be newly wed to Sir Randall Trent, baronet and unwitting accomplice in Larissa's scheme for adventure, in order to claim the last empty room.

Convinced they will never see one another again and that no one will be the wiser about their little white lie, Larissa and Sir Randall part ways, though not before Sir Randall can bestow upon Larissa a passionate kiss that sends her reeling. Both are surprised to be thrown together again so soon in London for the Season.

When their secret is discovered, Larissa and Sir Randall are forced to band together in the face of a crime spree in which Sir Randall is implicated. Life is about to offer Larissa an adventure unlike any she had ever imagined.