Left alone in her Greenwich apartment, a blind Susy, played by Zabryna Guevara, turns her disadvantage into advantage with only the darkness on her side in Portland Stage Company’s production of the cat-and-mouse suspense thriller “Wait Until Dark.” The play will be staged at Portland Performing Arts Center, 25A Forest Ave., Portland, through Nov. 23. For ticket prices and showtimes, call 774-0465 or visit www.portlandstage.com.