Done! ("Ebony"???)

507) A Convenient Gentleman by Victoria Aldridge
Tom Bertram is determined to make a success out of his uncle's New Zealand business. But the bank won't lend the money Tom so desperately needs until he has a wife.
Tom discovers Lydia Bennet, the younger daughter of an aristocrat and the only eligible woman in town, collapsed in a local bar. She grudgingly agrees to a paper marriage - if she's paid a hefty fee. They marry, and Tom is left wondering what he's got himself into. But when the gambler turns lady his feelings begin to change...

Yep, that's Lydia all right.

508) The Runaway Heiress by Anne O'Brien
Miss Donna Noble effects a daring night-time escape - in the Countess of Aldeborough's carriage! With scandal imminent, marriage seems the only course of action. But reluctance turns to respect when River Song uncovers the brutal marks of her unhappy life, and suddenly she will do all in her power to protect her...

So how will River react when she finds those brutal marks on Donna's brain were Ten's fault?

509) The Widow's Bargain by Juliet Landon
When her Scottish home is invaded by a dangerous band of reivers, Lady Charlotte Lucas's first thought is to keep her young son safe. She is prepared to strike a bargain with the men's leader - her body for her child's life. Sir the Master is intrigued. He means no harm to the boy, but he can't help but be drawn to her offer...

Yes, I'm sure it's the reasonable course of action, Charlotte, but you'll end up with a CGI snake down your throat.