The episode begins with the case in disarray after the trial of prime suspect Owen Pierce collapses on a technicality. Despite his release, DCI Alan Banks remains convinced of Pierce's guilt, even as Pierce’s home is targeted by vandals.
: A man whose life is ruined by suspicion, Pierce remains a central figure of pity and frustration as Banks refuses to let him go. Critical Themes [S2E6] Innocent Graves: Part 2
"DCI Banks" Innocent Graves: Part 1 (TV Episode 2012) - IMDb The episode begins with the case in disarray