First saw this nail-biter when I was a kid. It still holds up. Based on a Cornell Woolrich story (as was REAR WINDOW), this one boasts some of the most stunning cinematography I've ever seen. Director Tetzlaff, himself a cinematographer of considerable skill (he shot Alfred Hitchcock's NOTORIOUS), milks this one for all it's worth. Bobby Driscoll (the kid underground comix artist Robert Crumb reveals his brother fell in love with in the documentary CRUMB) never once wavers under the camera's close scrutiny: his must be one of the greatest performances EVER by a kid in a feature film. In fact, it's his performance that carries the film. Paul Stewart is as creepy as they come; his performance, as good as it is, perfectly compliments the low-key desperation of young Driscoll. Absolutely must-see moviemaking.