On the heels of its record-breaking premiere, FX has renewed American Horror Story for a fifth season.

The fourth incarnation of the anthology series from Glee co-creators Ryan Murphy and Brad Falchuk has been picked up for another round of 13 episodes, the cable network announced Monday. Season five will return in October 2015.

Casting for the fifth season has not been announced, though Murphy remains hopeful that Jessica Lange will be back — in some capacity — despite the Emmy winner's public announcement that Freak Show would be her last.

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When factoring in three days of delayed viewing, the carnival-themed Freak Show set records as the most-watched telecast in FX history with 10 million total viewers, 6.54 million in adults 18-49 and 4.08 million among adults 18-34. The record includes all programs with live-plus-seven-day delayed ratings, and topped the previous record holder, Sons of Anarchy.

"The American Horror Story anthology has had the highest growth trajectory of any show in FX history, not to mention an unprecedented track record of success in awards recognition,” said FX CEO John Landgraf. “With Ryan Murphy and his partners, Brad Falchuk, Dante Di Loreto and Tim Minear at the helm, the show’s success is not surprising. AHS continues to deliver amazing stories, a brilliant troupe of actors led by Jessica Lange, and a visual style unlike any other on TV. With Nip/Tuck, Glee, The Normal Heart, and American Horror Story, Ryan Murphy has established himself as one of the most successful and prolific producers of this generation. We expect AHS: Freak Show and the next incarnation of AHS to further his legacy.”

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AHS has been on an upward trajectory. Every season has topped the one before it, with Coven besting Asylum, which bested its freshman run, subtitled Murder House. Since its debut, the franchise has grown 148 percent in total viewers, 119 percent in the advertiser-coveted adults under 50 demo and 127 percent among adults 18-34.

The renewal will give Murphy two series on the air beyond the 2014-15 season, with AHS companion anthology series American Crime Story: The People v. O.J. Simpson also picked up for a 10-episode order. Murphy and Falchuk will bid farewell to Fox's Glee with a 13-episode final season set to return early next year.

For FX, AHS is part of an original scripted drama lineup that also includes The Americans, The Bridge, Justified, Fargo, Sons of Anarchy, The Strain and Tyrant.

Email: Lesley.Goldberg@THR.com

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