"the use of undercover investigators has become routine" in German The use of undercover investigators has become routine. Der Einsatz von verdeckten Ermittlern ist mitterweile Routine. Detailed translations for "the use of undercover investigators has become routine" The use of undercover investigators has become routine. The use of undercover investigators has become routine. Der Einsatz von verdeckten Ermittlern ist mitterweile Routine.