Announced last April, though it's been in development since 2012, HBO is developing a new TV series based on Clive Barker's Hellraiser, which has David Gordon Green (2018's Halloween) attached to direct a few early episodes. Now the news has come in, per Deadline, that horror maestro Clive Barker has joined the series as an executive producer. Barker's novella The Hellbound Heart was the basis for 1987's Hellrasier, which Barker himself wrote and directed.