Law & Order (1990)

Season 13: Episode 3

Investigating the death of a rock band singer who had large amounts of cocaine and heroin in her system, the detectives question a former boyfriend who was a disgruntled band mate of her late husband. The prosecuters are hampered by the actions of a retired detective, who worked a case with Briscoe several years back, turned writer whose unconventional research tactics makes him a suspect as well.