Father knows best in this spicy age-gap romance from the international-bestselling author of Pretty Monster, Haunted Love, and the Hide and Seek duet. Tilly Bardot knows exactly what she wants and isn't afraid to grab it with both hands. After a missed opportunity with a dark-eyed silver fox, Tilly meets wild flirt, Zephyr, hoping a spontaneous one-time fling against the bathroom wall will scratch the itch. But when she agrees to meet up at his house for round two, she has no idea all her wildest fantasies are about to come true. As it turns out, Zephyr's place doesn't belong to him at all. It's his father's: Caesar Di Rozé, the striking older man Tilly can't get out of her head. When he runs into her in the kitchen, he's more than willing to make up for lost time-and prove once and for all that daddy really does know best. Tilly's aware she's entering dangerous territory, but after one night with Caesar, she can't resist coming back for more. After all, why eat the apple when you can climb the tree? There's just one rule, a sacred vow that must be kept: Under no circumstances can she fall in love with him. Sacred Vow is a dark age-gap romance featuring a daddy dom and explicit scenes. It is intended for mature readers.