The Bill (1984) : 11x2

Garfield finds a young girl who has suffered from an overdose, but upon arrival at the hospital, discovers she is the third victim of a spate of recent victims. When he finds a fourth boy dead, Haines, now with the Drugs Squad, returns to Sun Hill to help Meadows track down the uncut consignment of heroin brought in from the Far East. Stamp and Quinnan discover a link to a burglary they investigated earlier in the day.