You must remember this: Gregory Peck wrestles with his cagey brain (again) in Mirage, now on DVD

When the lights suddenly go out in New York City, David Stillwell (Gregory Peck) begins groping in the dark for answers. The blackout becomes something almost supernatural, a catalytic event, afflicting David with some sort of amnesia. He meets a beautiful raven-haired stranger (Diane Baker) in a stairwell who says she knows him and then flees when he doesn’t reciprocate. He descends into subterranean floors that later vanish inexplicably. His apartment is weirdly empty and is rearranged in his absence. He sees flashes of things—a man falling to his death, shadowy figures whispering below a tree—that don’t add up. A rabid wrestling fan attempts to abduct him, claiming David possesses some item of great value to an unnamed party. David goes to the cops, to a shrink, to a private dick (Walter Matthau), but almost no one seems able to help him, and everyone cracks wise. His life is in danger and he can’t remember why, and that strange woman reappears, more beautiful and glowing with doom that before, and offers cold comfort: it’s precisely his forgetting that’s keeping him alive.

Though ostensibly riddled with Cold War paranoia, Mirage (1965), directed by Edward Dmytryk, is too slight and warmly lit to be as noir as the set-up promises, but it is terrific fun, particularly while the ambiguity holds and we know as little about what the hell is going on as David does. This is a movie about a man who can’t come to terms with the very recent past and turns to others to coax him slowly into it. And you’ve got to wonder what it is about Peck’s handsomely furrowed brow that makes him such a perfect, sympathetic embodiment of repressed memory. He was rendered so helpless by amnesia in Spellbound (45) that Ingrid Bergman fell in love with him even when he proved to be a potentially murderous imposter. There was some profound darkness in Peck that cut through the outer decency he so often exuded, and beautiful women always seemed willing to shine a light into that darkness and root around.

The music, by Quincy Jones, is irritating, and the bursts of violence are silly, which is probably why Dmytryk cuts to the TV to watch wrestling for a bit while David is supposed to be disarming and knocking out a gun-wielding heavy. The movie’s too long, and the dispatching of clues too piecemeal for a resolution that’s inevitably less exciting than what leads to it. But Peter Stone’s dialogue crackles, Peck and Matthau are a highly enjoyably matched team of would-be sleuths in over their heads, Baker is sexy and mysterious enough in her array of hats, and Dmtryk’s unusual use of silent flashbacks is nicely creepy, foreshadowing stylistic efforts soon to come from the likes of Nicolas Roeg. Overall, Mirage is much like the spooky little girl that offers David temporary refuge and a cup of invisible coffee: there’s not much substance there, but the presentation is enticing.