Obsessed is a 2009 American thriller film directed by Steve Shill. The Rainforest Films production stars Idris Elba, Beyoncé, and Ali Larter. Obsessed tells the story of Lisa, an office temp played by Larter, who develops romantic feelings for her boss, Derek Charles (Elba), and repeatedly attempts to seduce him. Derek's wife, Sharon (Beyoncé), learns of Lisa's obsessive behavior, and suspects an affair. Screen Gems president Clint Culpepper conceived the basic idea of Obsessed, which was then developed by writer David Loughery, allocated a production budget of $20 million, and filmed in the summer of 2008. Obsessed was inspired by the work of directors Roman Polanski and Alfred Hitchcock, and its score was written by James Dooley. Lisa and Sharon were dressed in contrasting styles to reinforce their conflicting characters. Obsessed opened in US theaters on April 24, 2009, and UK theaters on May 29, 2009, and was distributed by Screen Gems.
Obsessed received generally negative reviews from critics, many of whom were disappointed in the absence of an explanation for Lisa's obsession with Derek. Others noted that the potential theme of interracial conflict between the Charles family, who are black, and Lisa, who is white, was unexplored. The storyline of Obsessed has been compared with that of Fatal Attraction (1987) - a recollection in which Elba and Beyoncé have the Michael Douglas and Anne Archer roles, respectively, while Larter is in Glenn Close's - although film critics disliked the fact that Derek did not yield to Lisa's seduction. The fight scene finale between Sharon and Lisa, however, was commended by reviewers, and won the MTV Movie Award for Best Fight. Obsessed spent its first week atop the US box office, and grossed $73.8 million from theaters, internationally. Sony Pictures Home Entertainment released the film for home viewing on August 4, 2009, in the US and has sold 1.3 million DVDs, worth $21 million of consumer spending.