Wager for a Wife by Karen Tuft

William Barlow’s life has been forever altered: his estranged father is dead, and William has inherited the title of Viscount Farleigh. Along with the title comes a neglected estate, an enormous amount of gambling debt, and one astounding acquisition that will turn William’s world upside down . . .

It is her first London Season, and Lady Louisa Hargreaves could not be more pleased. She has attracted the attention of the Earl of Kerridge, and the two are on the cusp of an official betrothal. That is, until she learns of a generations-old family debt: her grandfather gambled her hand in marriage and lost, and now Louisa must pay the price. She will marry not the earl but a man she just met, who has taken her freedom in one fell swoop. Even as she struggles to understand the handsome and aloof man she is to wed, Louisa is irresistibly drawn to him—and he to her. But she soon realizes he is harboring secrets, and as her wedding day approaches, she must discover what her future husband is hiding before she makes the gravest mistake of her life.