PBS says the first episode of “Prohibition,” the film by Ken Burns and Lynn Novick, will premiere on the free PBS for iPad and PBS apps for the iPhone and iPod touch beginning Friday, Sept. 23. The apps are free at the Apple App Store.

Set in the era of bathtub gin, bootleggers and speakeasies, “Prohibition” tells the true story of the rise, rule and fall of the 18th Amendment to the U.S. Constitution. It was called the “Noble Experiment,” but it was, in fact, one of America’s most notorious civic failures.

The entire series will air nationally on PBS Sunday-Tuesday, Oct. 2-4. Each episode will also be streamed live on video.pbs.org, timed to the national broadcast. Episodes 2 and 3 of “Prohibition” will be available on PBS for iPad and PBS Apps for Phone and iPod touch the day after each television airdate and remain available through Friday, Oct. 7. All episodes will be available for purchase on DVD at shoppbs.org and on iTunes.