Black and Blue Widow by Rhiannon Rollness, is a dark fantasy romance novel published in 2024 [1]. The story is inspired by Roman history and mythology but is set on a different planet [2].

The book contains adult themes, including violence against women, murder, and torture, and is intended for adult audiences only. The novel follows the story of Luella, a serial killer who murders abusive men. The book begins with Luella on her wedding night, where she kills her husband, Senator Silas . Luella keeps a list of men she intends to kill, and she uses her magical abilities to change her appearance to get close to them.

The story also follows Rose, a young woman who is betrothed to a man named Tristan. Rose is almost kidnapped by a man who intends to sell her to a brothel called The Sabines, but she is rescued by Tristan. Tristan and Rose's relationship develops as the story progresses, and their paths cross with Luella's in unexpected ways.