It started with a childhood memory. Or maybe it was a dream. MIT Senior Lecturer Ken Urban couldn’t get the image of a face in a window out of his head. Eventually he developed the vision into a rough idea for a plot. Last year, he shared an early treatment with Jay Scheib, MIT’s Class of 1949 Professor of Music and Theater Arts, and the two decided it would be the perfect opportunity for a long-discussed collaboration. That kernel of an idea has come to life as a harrowing, suspenseful…