“Write what you know,” the saying goes. But when Bill Cain moves home to help his dying mother, he doesn’t have the words to capture the mystery of his own family. Amid doctor appointments and baseball games, he begins to see how seemingly ordinary details shape our lives. Support American Theatre: a just and thriving theatre ecology begins with information for all. Please join us in this mission by joining TCG, which entitles you to copies of our quarterly print magazine and helps support a…