San Diego Comic-Con is about to get a chilling twist. Horror is stepping into the spotlight in Hall H later this month, with The Toxic Avenger making history as the first Unrated film to ever host its own panel in the iconic venue. Joining the fright-filled festivities is Lionsgate’s The Long Walk, an adaptation of Stephen King’s dystopian 1979 novel.

The Long Walk panel is scheduled for Friday, July 25, from 3:00 to 4:00 PM in Hall H. It will be hosted by The Kingcast podcast duo, Eric Vespe and Anthony Breznican. Attendees can expect appearances from cast members David Jonsson, Tut Nyuot, Garrett Wareing, Charlie Plummer, and Mark Hamill. Also attending are producer Roy Lee and screenwriter JT Mollner.

To build anticipation, Lionsgate has dropped a series of character posters, which you can check out below. A previously released trailer is also available to watch.

Directed by Francis Lawrence (I Am Legend, Constantine), The Long Walk follows 16-year-old Raymond Garraty, who joins a brutal annual competition where 100 teenagers must walk without stopping—under strict rules—until only one remains.

The Long Walk will hit theaters nationwide on September 12.