The “American Horror Story” franchise is expanding as the FX mini-series heads into its fourth season. A day before the Season 4 premiere of “Freak Show,” FX has announced that creator Ryan Murphy will once again team up with the network to create a brand new series: “American Crime Story.”

According to Deadline, Murphy will be teaming up with Scott Alexander and Larry Karaszewski to create a script for the first installment, “The People Vs. O.J. Simpson.” The first 10-episode season, which has already been ordered by FX, will be based on Jeffrey Toobin’s book: “The Run of His Life: The People V. O.J. Simpson.”

“Time and time again, Ryan Murphy has transformed the medium of television by redefining genres and formats as he did with ‘Nip/Tuck,' 'Glee' and the 'American Horror Story' franchise, and we expect the same of ‘American Crime Story,'” FX Networks CEO John Landgraf said in a statement. “Scott and Larry have adapted Jeffrey Toobin’s book into a masterful 10-hour piece. I have no doubt that Ryan and his partners, Nina Jacobson, Brad Simpson, Brad Falchuk, and Dante Di Loreto, are going to make something very memorable here – and that it will be a spectacular first entry in what is destined to become a series of great true crime-based miniseries.”

According to the Hollywood Reporter, the first installment of “American Crime Story” will look at the O.J. Simpson trial from the perspective of the lawyers. The series will explore “how a combination of prosecution confidence, defense wiliness and the LAPD’s history with the city’s African-American community gave a jury what it needed: reasonable doubt.”

“This is an exciting project for me, as I’ve been looking for the right property which could serve as an extension of the ‘American Horror Story’ brand I love so much,” Murphy said of his new venture. “The O.J. case was as tragic as it was fascinating – it seemed like everyone had a stake in the outcome. It was really the beginning of the modern tabloid age.”

The “American Crime Story” news comes a year after Murphy expressed interest in creating a spinoff from “Coven,” the Season 3 installment of “American Horror Story.” E! Online reported at the time that Murphy was having “casual discussions” with Landgraf about continuing “Coven” beyond the end of the season – which would have been a first for the FX franchise. Ultimate the “Coven” spinoff did not work out, with Murphy explaining that he ended up scrapping the idea after realizing that he couldn’t kill off a particular character.

Filming for “American Crime Story” will begin in early 2015. “American Horror Story” Season 4 will premiere on FX on Wednesday at 10 p.m. EDT.