The third series will be set in 1967 and has been described by Lewis as “a psychedelic Summer of Love fairground ride, filled with twists and turns, shrieks and scares”.
Series two was broadcast back in March this year and saw around 7 million tuning in to watch the four-episode mini-series.
Endeavour debuted back in 2012 as a one-off special to mark the 25 anniversary of Inspector Morse but proved so popular with audiences that a full series was commissioned for the following year.
The series was created by Lewis as a prequel to the popularInspector Morse series, starring John Thaw as the canny police detective.
Endeavour is not the only Inspector Morse spin-off, a new series of Lewis will be aired later this year and feature Morse’s partner Robert Lewis investigating crimes in Oxford.