UPDATE with trailer shown in Hall H, more details: San Diego learned today that the prequel of a sort to The Walking Dead finally has a premiere date. Fear The Walking Dead will debut with a 90-minute episode on August 23 at 9 PM, it was revealed just now during AMC’s Hall H presentation at Comic-Con. Executive produced by the TWD team of Gale Anne Hurd, Robert Kirkman, Dave Alpert and Greg Nicotero, the Los Angeles-set spinoff focuses on the early days of what would become the zombie apocalypse.

With the kicker line of “when civilization ends, it ends fast,” the Fear The Walking Dead trailer shown to the crowd talked about man vs. nature while teasing the discovery that a zombie virus is spreading in L.A. – and this gritty, riotous City of Angels is not the glam of Hollywood. “By the end of the season, we get to see what happened to Atlanta,” showrunner Dave Erikson told the crowd.

Related ‘Fear The Walking Dead’ Teaser: “People Are Killing”

Minus Kirkman, the EPs were joined on today’s panel by Erickson right after sibling The Walking Dead’s panel. Cast members Cliff Curtis, Kim Dickens, Frank Dillane, Alycia Debnam-Carey, Elizabeth Rodriquez, Lorenzo James Henrie, Ruben Blades and Mercedes Mason were there too. Kirkman was supposed to be onstage as well but the EP and creator of The Walking Dead comics canceled his SDCC 2015 visit this week because of recent throat surgery.