Untouched (#1): Calla Hart just needs the money. She doesn't want anyone to get hurt. She wants to go to class, party with friends, and pay her bills. But when she agrees to go with a friend to an audition she is quickly pulled into the underground world of escort services, where the money is good and the secrets are worth even more. Once you're in the club, there's no getting out.

Stripped (#2): Calla’s world is being split in two. The judge is dead and she’s facing a criminal investigation. All while midterms are creeping up and she’s hiding her growing stash of money from her friends and family. But it could all fall apart. In a second. Everyone could find out all her secrets. She could go to jail. Her world could be over. Or it could just be beginning… When Hudson James makes her an offer she can't refuse, she'll learn more about herself than she thought possible.

Exposed (#3): Hudson James is dangerous. But Calla is having trouble staying away. Especially when he whisks her away to France on a romantic getaway. But is everything what it seems? Or is her world about to crumble around her once more?

Bare (#4): Calla's free of Hudson, but not for long. He's dangerous and even though she knows it, she doesn't care. Hudson wants out of the trade. But how can he keep Calla safe while he gets out? Someone is going to get hurt. Secrets cost more than anything.