A TV project that’s in development is bringing aboard some top talent, with Michael McKean, Miranda Richardson and Jack Whitehall signing on with “Good Omens,” Amazon announced today.

The project is a six-part television adaptation for Amazon Prime Video of the acclaimed novel by Terry Pratchett and Neil Gaiman.

“Equal parts humour and horror, fantasy and drama, the series is written by Neil Gaiman (‘American Gods’), who will also serve as showrunner, Amazon said, noting that the project will launch in 2019 in the U.K. on Prime Video before going on to BBC Two at a later date. A global launch on Amazon Prime Video is also scheduled for 2019.

“Whitehall will be playing Newton Pulsifer, aka Newt — an unfulfilled wages clerk turned witch-hunter — and McKean will take on the role of Sergeant Shadwell, the leader of the witch-finder army who sends him on his mission,” the announcement notes. “Miranda Richardson will play Madame Tracy, the psychic medium and part-time courtesan who provides a helping hand to the pair as they try to save the world from Armageddon.”

Said McKean: “I’m thrilled to join this amazing cast and creative team. I can’t think of anyone I’d rather enjoy Armageddon with than Gaiman, Pratchett, Mackinnon and company”

The announcement adds: “‘Good Omens’ was commissioned for Amazon Prime Video and for BBC Two by Patrick Holland, Controller, BBC Two; Shane Allen, Controller, BBC Comedy Commissioning; and BBC commissioning editor Gregor Sharp. It is being produced by the comedy team at BBC Studios, the BBC’s commercial production arm, Narrativia and The Blank Corporation, in association with BBC Worldwide.”

The series will be directed by Douglas Mackinnon, whose credits include “Doctor Who,” “Outlander” and the standalone Victorian episode of “Sherlock: The Abominable Bride,” winner of the Primetime Emmy for Outstanding Television Movie last year.