Triangulum

"Haunted by visions of a mysterious machine, the narrator is a seemingly adrift 17-year-old girl, whose sick father never recovered from the shock of losing his wife. She struggles to navigate school, sexual experimentation, and friendship across racial barriers in post-Apartheid South Africa. When three girls go missing from their town, on her mother's birthday, the narrator is convinced that it has something to do with "the machine" and how her mother also went missing in the 90s. Along with her friends, Litha and Part, she discovers a puzzling book on UFOs at the library, the references and similarities in which lead the friends to believe that the text holds clues to the narrators’s mother's abduction. Drawing upon suggestions in the text, she and her friends set out on an epic journey that takes them from their small town to an underground lab, a criminal network, and finally, a mysterious, dense forest, in search of clues as to what happened to the narrator's mother." -- Amazon.com