Related Clues:
- Hero of hard-boiled fiction
- Sleuth kin
- Clue seeker, briefly
- Old-time investigator
- Film noir stock character
- Chandler/Hammett hero
- P.I. kin
- PI or sleuth
- Solver with a set of clues, for short
- The ratio of a circle's circumference to its diameter
- Private eye, etc
- Noir investigator, slangily
- Sam Spade, e.g., informally
- Detective (informal)
- Investigator, informally