Gaiman had previously said he would not adapt their 1990 fantasy novel about the end of the world without Pratchett, who died in March 2015 from a rare form of Alzheimer’s disease. Before Pratchett’s death, director Dirk Maggs – at Gaiman’s instigation – adapted Good Omens for BBC Radio 4, which broadcast in 2014 and included cameos from Pratchett and Gaiman. At the time, Gaiman said he had urged Radio 4 to adapt it because: “I want Terry to be able to enjoy this while he’s still able to.”
But Gaiman, who flew into London on Thursday night for a memorial event for Pratchett at the Barbican, announced to whistles and cheers that he would be personally adapting the book for television. He said he had been spurred to change his mind when he was presented with a letter from Pratchett, intended to be read after his death.
Pratchett’s longtime friend and assistant Rob Wilkins recalled asking Gaiman to adapt Good Omens as they were driving back from Pratchett’s house, on one of the final occasions Gaiman met with him before his death. He said he had approached Gaiman because “it required love, it required patience”.
“Absolutely not,” Gaiman recalled replying, to laughter. “Terry and I had a deal that we would only work on Good Omens things together,” he explained. “Everything that was ever written – bookmarks and tiny little things – we would always collaborate, everything was a collaboration. So, obviously, no.”
But Wilkins revealed to the audience that Pratchett had left a letter posthumously for Gaiman. In the letter, Pratchett requested that the author write an adaptation by himself, with his blessing. “At that point, I think I said, ‘You bastard, yes,’” Gaiman recalled, to cheers.
“How much are we allowed to tell them?” Gaiman teased, before he was hushed by Wilkins. “Are we allowed to tell them it is a six-part television series?”