Sienna Atkins had seen it all growing up on the streets as a foster kid. But if it weren't for the help of her brother Linc, she would have never survived the streets alone. Linc protected her, made sure no harm ever came to her after the night she was attacked. And now as an adult, she had everything she ever wanted in life, but she was tired of being under the watchful eye of big brother. She craved to be cherished and loved as the woman she had come to be. She had needs just as any woman, desires that she could no longer contain while being around the two men who were hired by her brother to watch over her. Marx and Dalton had spent their lives getting themselves in and out of trouble. Being friends from early childhood, they each knew what the other liked and disliked most. And when they met the beautiful Sienna for the first time, Marx and Dalton knew they wanted a taste of what the fiery redhead had to offer. They never guessed they would find the one woman who could truly meet their individual needs or could handle their take-charge, controlling ways in the bedroom. It was a challenge they would be willing to accept just to get the luscious redhead into their hands and their bed. Not only will they do anything in their power to protect Sienna and keep her safe from anyone who threatens to harm the woman they have claimed as theirs, but Linc has also given the Sons of Sinners a new assignment, a challenge in life. One they can't help but to accept.