'Dexter dressed very scruffily, like a schoolteacher’
22 March 2017 Last updated at 08:11 GMT
Inspector Morse author Colin Dexter has died aged 86.
Dexter was best known for writing the novels about the cerebral, crossword-loving, ale-drinking detective and its two spin-offs, Lewis and Endeavour.
Lawrence Fox had a starring role in Lewis as DS James Hathaway and tells the Today programme that everything slowed down when Colin was on set.