Dr. Larry Roberts (Albert Finney), a Beverly Hills plastic surgeon, is puzzled when four beautiful models working in television commercials request cosmetic surgery to make changes so minor that they would be imperceptible to the naked eye. When these models start dying under mysterious circumstances, he discovers they are all linked to the same advertisement research firm. Could this company that develops new advertising technologies be behind the deaths?
However, when these same models start dying under mysterious circumstances, Roberts becomes suspicious and decides to investigate Digital Matrix. He has a strong interest in investigating the deaths: he is considered a prime suspect by the police (from evidence planted at the scene of one of the murders) and his most recent patient, Cindy (Susan Dey), is the last of the models to be digitally scanned.
During his investigation, Roberts discovers some advanced-technology devices the Digital Matrix corporation is using to hypnotize consumers into buying the products they advertise. He also discovers the L.O.O.K.E.R. (Light Ocular-Oriented Kinetic Emotive Responses) gun, a light pulse device that gives the illusion of invisibility by instantly mesmerizing its victims into losing all sense of time. Will it be the means of solving the intrigue?
The 2007 DVD release contains the cut of the film as it was played in theaters. A scene in which Reston, after detaining Roberts and Cindy in his mansion, explains why he had the other models murdered was omitted from the film but can be seen in television versions. He explains that the models were the measurements and that it was corporate policy to 'shred' old 'documents' that competitors might use. (Looker-deleted scene (YouTube))