The ITV Inspector Morse prequel drama, starring Ashes to Ashes actor Shaun Evans, will mark the 25th anniversary of the iconic detective, originally played by the late John Thaw.
The drama will be set in 1965 and follow the story of a missing schoolgirl in Oxford. It is written by Russell Lewis, who has also worked on Lewis and Cadfael.
"Inspector Morse was one of my favourite detectives," Masterpiece executive producer Rebecca Eaton said.
"Shaun Evans has a similar depth and quiet charm. I can't wait to see his Endeavour."
Meanwhile, Morse spinoff Lewis has also been picked up again by Masterpiece, with four new episodes expected to begin in September.
> Inspector Morse prequel Endeavour casts Shaun Evans - First Look