"Stranger with My Face" is a young adult novel written by Lois Duncan, first published in 1981. The story centers around Laurie Stratton, a teenage girl who begins to experience strange and unsettling occurrences after she sees a double of herself in a mirror.
As the story progresses, Laurie discovers that she has a twin sister, Lia, who was separated from her at birth and has the ability to astrally project her consciousness and take over Laurie's body. Lia uses this ability to try and take over Laurie's life, leading to a dangerous game of cat and mouse between the two sisters.
Throughout the novel, Laurie grapples with issues of identity and self-discovery, as she learns more about her hidden twin sister and the supernatural forces at play. The story explores themes of family, identity, and the blurred lines between reality and the supernatural.
"Stranger with My Face" has been praised for its suspenseful plot, relatable characters, and thought-provoking exploration of themes. The novel has been adapted into a made-for-TV movie and has become a popular choice among young adult readers.