Williams brings this oddball outsider to a kind of perfection in Omar Naim's "The Final Cut," a moody science fiction drama. He plays a Cutter, a man who edits memories. In an unspecified time that looks like the present, it is possible to acquire Zoe implants -- chips in the brain that record everything you see, hear and say. After your death, a Cutter can edit highlights of your memories into a two-hour video called a Rememory, for your friends and family to watch.

Of course a Cutter sees everything. He knows every secret, witnesses every sin, observes every lie. But a good Cutter, like a good mortician, puts the best possible face on things. Alan Hakman, Williams' character, is the best: "The dead mean nothing to me," he says. "I took this job out of respect for the living." A rival Cutter puts it more clearly: "If you can't bear to look at it, he will." And another says: "He's first on the list for Cutting scum-bags and lowlifes." He is, they say behind his back, a Sin Eater.

He lives alone, spending most of his time in a room with his Cutting machines. A woman friend despairs of tearing him away from his work, and says, "You're like a magician -- or a priest -- or a taxidermist." He is especially like a taxidermist, removing the rotting parts hidden inside his subjects while preserving the external covering in its ideal form. What does he think about the horrors he witnesses, the terrible things he edits from his Rememories? We don't know. We don't even know if he enjoys his voyeurism.

He looks sad and weary much of the time, like the angels in "Wings of Desire," who also see and know all. They pity and envy their humans -- pity them for the frailties, and envy them because they live in time, not eternity. It is impossible to say how Alan feels. Certainly he has no life of his own, apart from his job, which consists of Rememories of other lives. I was reminded of the documentary "Cinemania," about five or six people who plan their days in order to spend every waking moment watching a movie. Their entire lives, and Alan's, are vicarious.