Their Master By — S.m. Laviolette

: Smith desires a legitimate heir but knows he cannot be faithful to a single partner due to his "adventurous appetites".

: It deals with heavy subject matter, including "battered-childhood" trauma and complex ethical dilemmas. Their Master by S.M. LaViolette

: A high-level courtesan and the daughter of two parents who fed her lies to fuel her quest for revenge. She is "far more than she claims to be". : Smith desires a legitimate heir but knows

: He strikes a deal with Moira Dunsmore , a mysterious courtesan, to bear his child. She is "far more than she claims to be"

: Smith’s devoted body servant who is already in love with him. He becomes a central part of the romantic dynamic, leading to a polyamorous relationship. Themes & Style

: The book is described as "dark, angsty, and dryly witty".

: Unlike earlier books in the series that featured threesomes, this concludes with a committed polyamorous HEA (Happily Ever After) between Smith, Moira, and Luke.