(previews start on March 19; opens on March 22) The writer and performer David Greenspan can make Aristotle accessible and Gertrude Stein interesting. For his latest play, he's taken on more approachable material, reimagining the life of Helen Twelvetrees, a sad-eyed heroine of the early talkies, now succumbed to summer stock. Leigh Silverman directs, and Brooke Bloom and Keith Nobbs star.