Sin by Jess Michaels.
Sin is a novella which includes three stories by Jess Michaels: Wager of Sin, The Sweetest Sin and Sin's Mistress.
Wager of Sin: Bianca's scandalous ways are barely tolerated by the ton and her father has threatened to lock her away if her behavior does not approve. She has been spending a lot of her time in gaming hells with her late husband's best friend, Hawk. Unfortunately, she has lost a large sum of money to him and needs it to move far away from her family. She approaches him with a bargain. Bianca will be his mistress for a month and if at the end of their time together he begs her to stay she will get all her money back from him. Hawk agrees on the condition that she has to continue to be his mistress if she is the one begging at the end of the month. Who will be the winner of this bargain?
The Sweetest Sin: The story opens with Landon (Hawk's brother) and Juliana enjoying their wedding night. It is soon disrupted when Juliana's father snatches her away. He quickly has the wedding annulled (illegally) and she is soon married to another. It is now 5 years later and Juliana is a widow. She needs Landon's help finding her sister whom has been sold off to pay her father's gambling debts. Juliana doesn't want what happened to her to happen to her sister. Landon agrees on the condition that Juliana is in his bed from sunset to sunrise everyday. Will Juliana find her sister in time? Will Landon get his wife back?
Sin's Mistress: Evelyn (Juliana's sister) has been sold off to Sin to pay off her father's gambling debts. She arrives at Sin's home in the country with no idea who she has been sold off to. Sin has found out a secret about Evelyn and uses it against her after she arrives. But will this secret make Juliana's stay with Sin unbearable or will it be the most exciting 10 days of her life.
I really enjoyed this book. I loved that the characters were carried throughout each one. Please note that this is an erotic romance and not for the faint of heart! While there were lots of explicit sex scenes there was still a very nice storyline and I enjoyed getting to know the characters.