From a USA Today–bestselling author, a billionaire seduces his enemy's daughter and when he discovers she's pregnant, he offers a convenient marriage.

No woman has ever shunned wicked Italian tycoon Zac Delucca! But sweet, studious Sally is in a world of her own, looking after her sick mother. Little does she realize her unfocused disinterest is driving Zac's fury! Especially as her father is responsible for embezzling millions from his company.

There's a debt to be paid. Zac will offer Sally an ultimatum—become his mistress on demand or risk ruin! He's confident she'll make the right choice . . . .