Sons of Sin Series by Kate Moore

They are the "Sons of Sin"—three brothers whose mother is an infamous London courtesan. Though Xander, Will and Kit may not be legitimate in the eyes of the aristocracy, their mother made sure that they each received a gentleman's education and knew how to make their way in the world... Despite being knighted for saving the Prince Regent's life, Sir Alexander Jones will never truly be accepted by the nobility... moreThey are the "Sons of Sin"—three brothers whose mother is an infamous London courtesan. Though Xander, Will and Kit may not be legitimate in the eyes of the aristocracy, their mother made sure that they each received a gentleman's education and knew how to make their way in the world... Despite being knighted for saving the Prince Regent's life, Sir Alexander Jones will never truly be accepted by the nobility. But if he's to find his long lost brother, Xander must win the first willing heiress he can find— and obtain the funds he needs to search London's darkest corners. Slandered and denied her rightful inheritance by the machinations of her unscrupulous uncle, Cleo Spencer has been living on a farm with only a meager stipend to support her and her brother. Only by marrying can Cleo access her funds and provide her younger brother the life he deserves. less

Ex-spy and former Bow Street Runner Will Jones rescues a beautiful, unsullied virgin from a London brothel, but she is no swooning maiden. Instead, he faces a woman of wit who resists his aid, escapes his protection...and captures his imagination.

In book three Kit has become Daventry, a warrior angel trapped in a gilded cage who wants to free his family with a decisive defeat of the old duke. In a daring move that breaks all the rules of his safe life, he hires Emma Portland. Everything about Emma is a lie except her love. Alone, pursued by spies, falsely accused of a murder she didn’t commit, Emma must spy for the Duke of Wenlocke against Daventry. If she doesn’t play by Wenlocke’s rules, she dies... moreIn book three Kit has become Daventry, a warrior angel trapped in a gilded cage who wants to free his family with a decisive defeat of the old duke. In a daring move that breaks all the rules of his safe life, he hires Emma Portland. Everything about Emma is a lie except her love. Alone, pursued by spies, falsely accused of a murder she didn’t commit, Emma must spy for the Duke of Wenlocke against Daventry. If she doesn’t play by Wenlocke’s rules, she dies. Emma passes herself off as a tutor to Daventry’s lost boys as she plans her next escape. What she doesn’t plan on is falling in love. To Seduce an Angel is the story of two lovers caught between the deadly pull of their past lives and the demands of the future. less