"Guards at the Taj" by Rajiv Joseph, at The Geffen Playhouse in Los Angeles through Nov. 15. Pictured: Raffi Barsoumian and Ramiz Monsef. (Photo by Michael Lamont)

Onstage This Week: Oct. 19–25

A flesh-eating plant, virtual wonderlands, and spiritual dimensions lend to a theme of supernatural plays taking the stage this week.