Possible Questions:
- Gumshoe
- Private eye
- G-man
- Shamus
- Dick
- P.I.
- Private eye, slangily
- Pulp fiction gumshoe
- Sleuth
- Gumshoe, briefly
- Sleuth, for short
- Sleuth, informally
- Sleuth, slangily
- Sleuth, in slang
- Gumshoe, for short
- Sherlock
- Private eye, for short
- P.I., e.g.
- Investigator, slangily
- Sleuth (Sl.)
- Private eye, briefly
- PI
- Old-time gumshoe
- Noir hero
- Lt. Columbo, e.g.
- He works on a case-by-case basis
- Clue hunter, informally
- Spade, e.g., for short
- Soho sleuth
- Sleuth, briefly
- Slangy sleuth
- Short investigator?
- Short investigator
- Sam Spade, e.g.
- Sam Spade type
- Hawkshaw
- Gumshoe, slangily
- Gumshoe or shamus
- Dick Tracy, e.g.
- Clue collector, slangily
- Case guy
- Caper investigator
- Caper film narrator, often
- V.I. Warshawski, e.g.
- Sue Grafton's Kinsey Millhone, e.g.
- Spade, e.g., slangily
- Spade, e.g., briefly
- Spade or Hammer
- Sleuth, to Sayers
- Sleuth in pulp fiction
- Sam Spade, for one
- Sam Spade, e.g., for short
- Queen, e.g., for short
- Pulp protagonist, perhaps
- Private investigator, in slang
- Private investigator, in old slang
- Private eye, informally
- Private dick
- Plainclothesman, for short
- Pinkerton, e.g.
- Person with a magnifying glass, for short?
- Operator: Abbr.
- Operative, for short
- Noir protagonist
- Magnum, e.g., briefly
- L.A.P.D. member
- Investigator, informally
- Investigator, briefly
- Investigator for short
- He works on a case by case basis
- Hammett's Spade, e.g.
- Hammer or Spade, e.g.
- Flatfoot's relative
- Dick Tracy is one, briefly
- Criminal investigator, for short
- Common pulp protagonist
- Clue analyzer, in slang
- Case studier, slangily