Police inspector who clashes with Holmes over the Drebber case investigation. He identifies Joseph Stangerson as a suspect and recovers two pills, one of which proves lethal when accidentally ingested by his dog. He remains present during the resolution of the case but receives little credit.
Inspector Lestrade competes with Holmes for investigative credit and employs less effective methods.
Inspector Gregson and Inspector Lestrade compete for professional recognition and investigative authority.