Neil Gaimanis back at the Chateau Marmont.

It was pretty grungy.

Being here now, with the show finally in the can, hes not sure how to feel.

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Chris Raphael/Amazon Studios

He finally settles on: Weird.

The pair have lived on Earth since the Garden of Eden, growing rather accustomed to their terrestrial lifestyles.

That early attempt to pitch a screenplay was met with resistance.

Good Omens

Jon Hamm is back for Amazon Prime Video’s “Good Omens” season 2.Chris Raphael/Amazon Studios

In either case, neither of them will believe it until theyre actually eating popcorn at the premiere.

And even then, probably not.

Wed approached some of the best writers in the business, Gaiman says.

Its too weird, its too shapeless, Im not really sure what the plot is.

Everything about that is wrong.

Finally, in 2014, Pratchett wrote Gaiman a letter.

Gaiman agreed and set to work on a six-episode outline.

I come home from the funeral and I start writing the first episode, Gaiman explains.

Gaiman says with a laugh.

That kind of thing, which I would never do in reality.

He was always very clear it was a very personal project, Tennant adds.

He was doing it to honor Terry Pratchetts dying wish.

And this was not something that Neil Gaiman, best-selling novelist, needs to necessarily do with his time.

He couldve probably written four novels in the time he devoted to getting this on screen.

So it was very special to have him there.

Still, the nature of adaptation meant changing and adding things.

Every decision wouldve been very scary.

This wasnt done to fill six hours of television, Gaiman says.

This was done because we wanted this thing to exist and it wouldnt exist if we didnt make it.

So we made it.