Stephanie Patrick is a fictional character from the 1999 novel "The Rhythm Section" by Mark Burnell. She is portrayed as a woman who undergoes a dramatic transformation after the tragic death of her family in a plane crash. Struggling with grief and despair, she becomes involved in a world of espionage and crime. In her quest for revenge, Stephanie takes on the identity of a spy, honing her skills in combat and investigation. The character has been adapted into a film, with Blake Lively playing the lead role in the 2020 movie, bringing her story to a wider audience.