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*Writing has just begun on “Katrina: American Crime Story,” the follow up to FX’s successful and award winning series “The People v. O.J. Simpson: American Crime Story.”

Speaking during a TCA panel Tuesday, executive producer Brad Simpson told TV critics that “O.J.” EP/writer D.V. DeVincentis is working with EP/director Ryan Murphy on the second season.

“Yes, you will have famous people, and also the people who weren’t famous during Katrina,” Simpson said. “Looking at it, thematically, it will be incredibly different” than the O.J. project, calling ACS a franchise that “morphs based on the crime.”

“It’s going to be about two things: the intensity of what it was like to be on the ground in that pressure cooker and also the bigger crime,” he said.

Executive producer Brad Simpson speaks onstage at 'The People v. O.J. Simpson: American Crime Story' panel discussion during the FX portion of the 2016 Television Critics Association Summer Tour at The Beverly Hilton Hotel on August 9, 2016 in Beverly Hills, California.

Executive producer Brad Simpson speaks onstage at ‘The People v. O.J. Simpson: American Crime Story’ panel discussion during the FX portion of the 2016 Television Critics Association Summer Tour at The Beverly Hilton Hotel on August 9, 2016 in Beverly Hills, California.

Explaining further, Simpson said that Katrina “was something predictable we weren’t prepared for, even though we knew it was going to happen. “Katrina” will put a lens on America “and show some uncomfortable truths about it.”

The 2005 hurricane was the costliest natural disaster in U.S. history and at least 1,245 people died in the storm and subsequent flooding – mostly because of the more than 50 breaches in New Orleans’ inadequate hurricane surge protection.

Many of the original cast of “The People v. O.J. Simpson” are expected to return for “Katrina.”

Per Deadline.com:

“O.J’s” Marcia Clark, Sarah Paulson, says she intends to return to the series. “The Katrina story, to me, is a literal American crime,” Paulson told Deadline. “It says something about a uniquely American attitude, and I find it incredibly potent.”

The plan, as with Murphy’s other anthology series “American Horror Story” and “Scream Queens,” is to get as many as possible of the cast from “The People v. O.J. Simpson.” John Travolta, who played attorney Robert Shapiro on the O.J. series and flew to Louisiana after Katrina to assist in the rescue effort, already has expressed his interest.