“Apana once climbed up walls like a pre-Spiderman sleuth and slipped into an opium dive,” writes Huang.
That sleuth is Peter Darwin—no relation to Charles, thanks kindly.
As the sleuth in Comeback puts it, danger wears many faces.
c.1200, "track or trail of a person," from Old Norse sloð "trail," of uncertain origin. Meaning "detective" is 1872, shortening of sleuth-hound "keen investigator" (1849), a figurative use of a word that dates back to late 14c. meaning a kind of bloodhound. The verb (intransitive) meaning "to act as a detective, investigate" is recorded from 1905. Related: Sleuthed; sleuthing.