Periscope Entertainment announced today Charlie Hofheimer (“24: Legacy,” Black Hawk Down), Aleksa Palladino (“Boardwalk Empire,” “Halt and Catch Fire”), Robin Lord Taylor (“Gotham,” “The Walking Dead”), and Clarke Peters (“The Wire,” “John Wick”) have signed on to star in David Guy Levy’s psychological sci-fi thriller “The Mandela Effect,” written by Steffen Schlachtenhaufen and Levy. The film marks their second creative collaboration following “Would You Rather.” Joshua Fruehling, Levy and Schlachtenhaufen are producing under the Periscope banner.

“The Mandela Effect” follows a man who becomes obsessed with facts and events that have been collectively misremembered by thousands of people. Believing the phenomena to be the symptom of something much larger, his obsession eventually leads him to question reality itself.

“The Mandela effect” is what the internet describes as those curious instances in which many of us are certain we remember something a particular way, but it turns out we’re incorrect. The name of the theory comes from many people feeling certain they could remember Nelson Mandela dying while he was still in prison back in the ’80s. Contrary to what many thought, Mandela’s actual death was on Dec. 5, 2013, despite some claiming to remember seeing clips of his funeral on TV.

Director and Periscope Entertainment’s David Guy Levy said: “I’m grateful to have such a talented group of actors come together to tell this story; Steffen and I could not have asked for a better group to bring these characters to life, and we look forward to sharing this film with audiences everywhere.”

Principal photography is currently underway in Los Angeles.

Hofheimer is represented by Paradigm Talent Agency and Forward Entertainment; Palladino is represented by The Gersh Agency; Taylor is represented by Abrams Artists Agency and Untitled Entertainment; and Peters is represented by Stone Manners Salners Agency.