Plot
The series starred John Thaw as barrister James Kavanagh QC, who comes from a working-class upbringing in Bolton, Greater Manchester. This is only discovered in later episodes as his parents' health deteriorates and through an exchange with a colleague who presumed that Kavanagh was actually a Yorkshireman. The series deals with his battles in the courtroom as well as his domestic dramas which include the death of his devoted and affectionate wife. Later he begins dating a fellow barrister.

In court, Kavanagh is usually seen to be defending a client who seems likely to be convicted until a twist in the case occurs, but occasionally Kavanagh is seen in a prosecuting role. The main plot often features Kavanagh confronting cases with a subtext of racism, sexism or other prejudice. In sub-plots comedy came from the pomposity and self-absorption of Jeremy, a posh barrister in chambers. Kavanagh will not stand for injustice and is never bullied by threats or bribes from those whom he is up against in the courtroom.

Several online sources list two additional episodes in series four: 7. "Ceremony of Innocence" (28 April 1998) and 8. "Seasons of Mist" (5 May 1998), the plot descriptions of which are identical to two episodes broadcast in series five: 3. "Time of Need" (22 March 1999) and 4. "End Games" (29 March 1999). This was due to a scheduling change which prevented these two episodes from airing at their scheduled time. Later broadcast as part of series five, they were re-titled to avoid confusion.