Alfred Hitchcock didn’t have access to a green screen or stunt vests loaded with fake blood when he shot 1951’s Strangers on a Train, yet he managed to film one of film’s most nerve-racking fight scenes, in which Farley Granger and Robert Walker punch, kick, and choke their way along the circumference of a merry-go-round spinning nauseatingly fast. But it’s not just the two dudes scrapping that is so harrowing—there’s also the mad shrieking from several women clinging to their plastic steeds, and the possibility that either the young boy who tries to help Granger, or the old man who bellies under the ride to turn it off, will die a gruesome death. The finale will draw gasps even from viewers raised on CGI. And if you check out the movie tonight, screening as part of the AFI Silver’s Noir City DC series, you’ll catch it alongside Granger himself, Hitchock’s handsomest Hollywood lead. STRANGERS ON A TRAIN SHOWS AT 7 P.M. AT THE AFI SILVER THEATRE AND CULTURAL CENTER, 8633 COLESVILLE RD, SILVER SPRING. $12. (301) 495-6720.