In July 2015, longtime Boston-area police detective Stephen LeBert was recorded on video threatening to "blow a hole" through the head of a motorist whom he had been following while off duty. 

The incident made national headlines for a day. But an examination of LeBert's personnel file detailed a long-standing pattern of verbal and physical misconduct — including three criminal complaints alleging assault — that went largely unchecked. 

After the Medford Transcript's series documenting LeBert's troubled 30-year policing history, the officer resigned.