Lost love can be haunting, especially if your dead spouse appears to you as a ghost. Conor McPherson’s 2004 play, Shining City, shows us how: John, a widower in Dublin, seeks professional help after seeing his wife’s ghost. He divulges his thoughts about his late wife and past regrets to Ian, a therapist whose own demons add to the story’s complexities. The men attempt to determine whether John’s wife really haunts his home, but that quest only serves as a catalyst for a dual self-reckoning around their lifelong feelings of guilt and regret. McPherson weaves human error into the play with sharp intuition—so even if you’ve never been haunted, this story might unearth the specters of your own regrets. The play runs Aug. 9 to Sept. 21 at Atlas Performing Arts Center, 1333 H St. NE. $10–$40. (202) 399-7993. atlasarts.org.