The Devilish Duke (Mills & Boon)

Miss Rosalind Weaver is on a mission.

She must convince the Duke of Fallon to marry her, or her father will give her away to the next highest bidder, a man she cannot stand. She thinks all the Duke desires is reassurance that she can give him an heir, but she soon learns he wants a more thorough test of how she will fare as his wife in the bedroom