Happening Friday

STAGE

“Elektra” A new translation of Sophocles’ “Elektra” springs to life on the Getty Villa’s outdoor stage. Starring Tyrees Allen and Olympia Dukakis, the spare and modern interpretation tells the tragic tale of willful memory, vengeance and the damage that happens to someone who refuses to forget. Getty Villa Barbara and Lawrence Fleischman Theater, 17985 Pacific Coast Highway, Pacific Palisades. 8 p.m. Today-Sat. Ends Oct. 2. $42. (310) 440-7300. https://www.getty.edu

BOOKS

James Ellroy Bestselling crime-fiction novelist James Ellroy (“L.A. Confidential,” “The Black Dahlia”) will discuss and sign his latest nonfiction work, “The Hilliker Curse.” Unraveling pieces of his own psyche and personal history, this candid memoir delves into the author’s personal experience in relationships. Mystery Bookstore. 1036-C Broxton Ave., L.A. 7 p.m. Free. https://www.mystery-bookstore.com

EVENTS

HempCon Amid the controversy surrounding medical marijuana, pot dispensaries and Proposition 19 (which would legalize possession in California), HempCon rolls into town. The medical-marijuana show features exhibits and seminars by dispensaries, equipment providers, legal services, advocates and others, as well as music and entertainment. No one younger than 18 admitted. Los Angeles Convention Center, 1201 S. Figueroa St., L.A. 2-9 p.m. Also, 11 a.m.-9 p.m. Sat. and 11 a.m.-7 p.m. Sun. $15. (626) 961-6522. https://www.hempcon.com

ART

Punk photos Though many equate punk rock with the Ramones and CBGB, Los Angeles boasted its own vibrant scene in the late 1970s and early ‘80s, as is documented in “The Beautiful & the Damned.” This new exhibition of photographs by Ann Summa includes portraits of such bands as the Germs, the Screamers and the Cramps. Exene Cervenka, of seminal L.A. punk band X, will perform an acoustic set and join Summa for a book signing at a special reception Saturday evening. Track 16 Gallery, 2525 Michigan Ave., Santa Monica. Noon-6 p.m. today; noon-9 p.m. Sat., with opening reception 6-9 p.m. (310) 264-4678. https://www.track16.com