A wealth of Hepburns graced the silver screen of the 20th century, and this month Perkasie offers just a small slice of Katharine and Audrey's oeuvre. Venture this week to WWI East Africa, where Katharine Hepburn, as a strait-laced English missionary, persuades a gin-swilling Canadian riverboat captain to undertake a trip up a treacherous river and use his boat to attack a German gunship.