Sarah Pinborough's 'Behind Her Eyes' is a captivating psychological thriller that delves into the dark secrets of a twisted love triangle. Following Louise, a single mother who embarks on an affair with her married boss, David, she soon finds herself befriending his enigmatic wife, Adele. What begins as a series of coincidences quickly escalates into a chilling web of manipulation, obsession, and mind-bending revelations. The novel, also a popular Netflix series, challenges perceptions of reality and leaves readers questioning everything they thought they knew about human relationships and the power of the mind. Its unpredictable plot and unreliable narrators make it a truly unforgettable experience.