Details about the lead cast of the third season of "American Crime Story" were finally announced.

Reports confirm that former "Glee" star Darren Criss officially signed to portray the role of Andrew Cunanan, the serial killer responsible for the death of fashion designer Gianni Versace. On the other hand, "The Girl on the Train" star Edgar Ramirez will play the role of Versace in the third installment of the true crime anthology.

Versace was killed on July 15, 1997 in the steps of his own home in Miami Beach, Florida. Before the police found out where Cunanan was hiding after the crime, the serial killer killed himself in the upstairs bedroom of a boathouse in Miami 8 days after Versace's death.

Cunanan was also responsible for the death of four other men before killing the fashion designer.

No other cast members has been announced for the third season of "American Crime Story," but the series creator Ryan Murphy denied the rumored casting of Lady Gaga to portray the role of Versace's sister Donatella in the series in a previous interview with the Variety.

According to Murphy, the project could take at least five months to produce. It will also take them in various locations around the world. This will be a conflict in the singer-actress' schedule.

The Versace edition of "American Crime Story" is staed to air on FX six months after season 2 airs in 2018. The second season will reportedly center on the events that happened during the Hurricane Katrina disaster in 2005.

Meanwhile, Ryan Murphy also confirmed in an interview with E! News that the fourth season of "American Crime Story" will feature the Monica Lewinsky sex scandal. He also revealed that Sarah Paulson will be included in the cast, but she will not portray the role of Hillary Clinton in the series.

More details about "American Crime Story" are expected to be revealed by FX in the coming days.