TV detective's code (5)

I believe the answer is:

morse

This clue is a double definition.

'tv detective's' is the first definition.
(Inspector Morse)

'code' is the second definition.
(Morse code)

(Other definitions for morse that I've seen before include "Walrus - TV detective" , "One who enjoyed solving code" , "Fictional inspector; code" , "Dot-dash code inventor" , "Colin Dexter's fictional detective" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.