“Jagged Edge” is supremely effective at what it sets out to do – toy with the audience. It’s another effective thriller from Richard Marquand, who made “Eye of the Needle.” The performances are good and the plot is watertight, as a whodunit must be. I have only one quarrel with the film, but it’s a fairly substantial one. The movie only wants to keep us guessing. The characters are developed only in ways intended to string us along. Any behavior is possible if it will further the plot. There’s no sense of reality beneath the gleaming surface. Roger Ebert