The Main Library's Alfred Hitchcock fall film series, "The Master of Suspense: Alfred Hitchcock Classics," continues this week with a screening of Hitchcock's 1935 thriller, The 39 Steps. In this flick -- which is based off of John Buchan's novel, The Thirty-Nine Steps -- adventure follows Englishman Richard Hannay (played by Robert Donat), who becomes involved in a conspiracy to capture British military secrets as he attends a "Mr. Memory" (played by Wylie Watson) demonstration. Forced to go on the run, Hannay links up with a beautiful lassie named Pamela (played by Madeleine Carroll), who at first thinks Hannay is crazy because of his conspiracy accusations, but soon discovers the truth. Free. 7 p.m. ImaginOn, 300 E. 7th St. 704-416-0252. www.plcmc.org.