“Never Again: Forging a Convention for Crimes Against Humanity,” a film produced by the Whitney R. Harris World Law Institute at Washington University in St. Louis School of Law, will be shown at 12:30 p.m. Saturday, Nov. 11, during the 26th annual St. Louis International Film Festival.

Project ARK, with support from the Substance Abuse and Mental Health Services Administration’s new media project, will mark National Prevention Week with a screening of the documentary “You Are Not Alone” at 6:30 p.m. Sunday, May 18, at the Missouri History Museum, 5700 Lindell Blvd., in Forest Park.