This series is a remake of the movie IP with the same core and basic settings, not a direct remake of the original 1987 movie. The script is based on a story co-written by Alexandra Cunningham and Kevin J. Hynes, telling the story of Alex who became obsessed with her lover Dan after a short extramarital affair. The series will explore the eternal themes of marriage and infidelity from the modern attitude towards strong women, personality disorders and coercive control. In the 1987 movie, Glenn Close played Alex, Michael Douglas played Dan, and Anne Archer played Dan's wife.