Stepping into the wrong carriage at a Sussex village, Elinor Rochdale is swept up in a thrilling and dangerous adventure. Overnight the would-be governess becomes mistress of a ruined estate and partner in a secret conspiracy to save a family's name. By midnight, she is a bride, by dawn, a widow.

Horry Winwood doesn't play by the rules. So when her family are near ruin and her sister is about to enter a loveless marriage to a wealthy man to settle the family debts, young and headstrong Horry proposes to marry him instead. As her new husband's attentions fall elsewhere, Horry feels increasingly unhappy. Then she meets the attractive and dangerous Lord Lethbridge, and her days suddenly become more exciting. But there is bad blood between Horry's husband and Lord Lethbridge, and as complications and deceptions mount, the social tangle grows ever trickier to unpick.

Based on a story she had written for her brother and published when she was 19 years old, The Black Moth is set during the Georgian era in the 1750s and follows Lord Jack Carstares, the eldest son of the Earl of Wyncham. Six years ago, Jack took the blame when his younger brother Richard cheated at cards. Jack consequently faced social exile and fled England for the European continent. He has now secretly returned, robbing carriages as a highwayman.

Miles from anywhere, the isolated mansion Darracott Place is presided over by the irascible Lord Darracott. The recent drowning of his eldest son has done nothing to improve his temper. For now he must send for the unknown offspring of the uncle whom the family are never permitted to mention. Yet none of that beleaguered family are prepared for the arrival of the weaver's brat and heir apparent.

The excesses of the young Marquis of Vidal are even wilder than his father's before him. Not for nothing is the reckless duellist and gamester called "the Devil's Cub". But when he is forced to leave the country, Mary Challoner discovers his fiendish plan to abduct her sister. Any only by daring to impersonate her can Mary save her sibling from certain ruin.