Ambrose Parry is a pseudonym for a collaborative writing duo composed of Chris Brookmyre and Marisa Haetzman. Chris Brookmyre is a well-known Scottish novelist, mostly recognized for his crime and thriller novels, while Marisa Haetzman is a consultant anaesthetist who brings her medical expertise to their work. Together, they write historical fiction, with a particular focus on medical history. Their most notable work is the "Raven, Fisher, and Simpson" series, which begins with "The Way of All Flesh," set in 19th century Edinburgh and delving into the world of medicine, murder, and mystery during a time of great scientific advancement. The pseudonym "Ambrose Parry" combines an homage to Dr. James Young Simpson, a pioneer in the use of chloroform, with the word "parity," reflecting the equality within their writing partnership.