Mary Shelley transformed her inner chaos into the 1831 masterpiece, “Frankenstein,” which is often viewed as a warning against the upcoming industrialized world. But Shelley’s own demons helped her create the big guy, and all is revealed in Emily Dendinger’s “Hideous Progeny.”July 9 at 8 p.m. (Through July 23). $15, $10 students and seniors, pay-what-you-can performances Thursday ($5 minimum). Boston Playwrights’ Theatre, 949 Commonwealth Ave., Boston. 866-811-4111. www.hollandproductions.orgMary Shelley transformed her inner chaos into the 1831 masterpiece, “Frankenstein,” which is often viewed as a warning against the upcoming industrialized world. But Shelley’s own demons helped her create the big guy, and all is revealed in Emily Dendinger’s “Hideous Progeny.”July 9 at 8 p.m. (Through July 23). $15, $10 students and seniors, pay-what-you-can performances Thursday ($5 minimum). Boston Playwrights’ Theatre, 949 Commonwealth Ave., Boston. 866-811-4111. www.hollandproductions.org