detect

1. (intransitive, informal) To work or solve cases as a detective.Examples: "Parker would in all likelihood have done so; he was paid to detect and to do nothing else, and neither his natural gifts nor his education (at Barrow-in-Furness Grammar School) prompted him to stray into side-tracks at the beck of an ill-regulated imagination."; "Let me introduce myself: Mike MacAdam, hotel detective. / H-how d-’you do? / Mind if I begin detecting?"; "In a detective story, a detective detects; an active effort is made to determine who committed a given crime, and detecting the identity of a criminal could not be done until there were detectives."informalintransitive