Related Clues:
- ''Airplane!'' star Robert
- Name in telegraphy
- Detective with feeling of contrition about to be let off
- Inventor with a Central Park statue since 1871
- American inventor leaving small item unfinished
- Detective created by Colin Dexter
- Fictional inspector; code
- ''Code'' name
- Portraitist/inventor
- Colin Dexter's crossword-solving inspector
- Old code pioneer
- Wire tapping?
- Kansas' Fort ___
- 1975 inductee into the National Inventors Hall of Fame (103 years after he died)
- Some algorithm or secret code