Watching the detectives: The arrest of the inappropriately named Daniel Good.

With Good safely in his grave, the Metropolitan Police had to reconsider having only uniformed officers in their ranks. Had some officers been working out of uniform, they reasoned, they might have caught him far sooner. With that in mind a permanent cadre of non-uniformed officers. the Detective Department, was set up in August, 1842. It later became the Criminal Investigation Department.