"Riverdale"'s showrunner Roberto Aguirre-Sacasa has confirmed the teen drama series' season four premiere will pay tribute to Luke Perry, in what he has described as probably the show's "most important episode ever".
Roberto Aguirre-Sacasa took to Twitter to share a picture of the script for the episode, which is titled "In Memoriam", and the screenwriter admitted he was "thankful for the opportunity" to pay tribute to the late actor - who died in March aged 52 after suffering a stroke - and his character Fred Andrews.
He tweeted: "Probably the most important episode of #Riverdale we'll do this year, if not ever. A tribute to our fallen friend. Thankful for this opportunity to honor Luke & Fred. (sic)"