[探偵] detective service [work]; secret investigation; detection; espionage; a detective; a criminal [detective] agent; a spy; a sleuth

[探偵-] investigate [inquire into] (a matter) secretly; do detective work; detect; spy (on a person, into a secret); trace [track] (a crime, criminal); search for (a culprit); gumshoe

[探偵] detective service [work]; secret investigation; detection; espionage; a detective; a criminal [detective] agent; a spy; a sleuth

[探偵-] investigate [inquire into] (a matter) secretly; do detective work; detect; spy (on a person, into a secret); trace [track] (a crime, criminal); search for (a culprit); gumshoe