Taggart - Season 20 - Eps 4: Saints and Sinners
When lawyer Richard Flett is shot dead, suspicion initially falls on his widow Adele and his partner Charlie Muir, who were having an affair. However, when Muir is also murdered, Burke uncovers a wholly different motive. A group of residents was taking a company called Arcadia to court on the grounds that they had caused pollution, leading to illness.
About Taggart

Title: Taggart
First Air Date: 1983-09-06
Last Air Date: 2011-02-22
Status: Ended
Rating: 6.333/10 (from 21 votes)
Language: EN
Seasons: 27
Total Episodes: 114
Network: ITV1
Genres: Crime, Drama
Production Companies: Scottish Television Enterprises, Scottish Television (STV), SMG Productions, STV Studios
Synopsis
Taggart is a Scottish detective television program. The series revolves around a group of detectives initially in the Maryhill CID of Strathclyde Police, though various storylines have happened in other parts of the Greater Glasgow area, and as of the most recent series the team have operated out of the fictional John Street police station across the street from the City Chambers.
Cast

Mark McManus
DCI Jim Taggart

James MacPherson
DCI Mike Jardine

Alex Norton
DCI Matt Burke

Colin McCredie
DC Stuart Fraser

John Michie
DI Robbie Ross

Harriet Buchan
Jean Taggart

Tom Watson
Superintendent Murray