DCI Banks and the Case of the Catastrophic Emotional Errors

[This post is talking about the DCI Banks episode "Friend of the Devil" and anyone reading who wants to avoid spoilers for that story would be advised to avoid reading this post. Also, the subject of the crimes is mostly violent rape and murder.]

Last night I watched an episode of DCI Banks which struck me as very pro-police. I mean, you could probably safely assume that any mystery series in which the protagonists are police who solve crimes is going to be pro-police but in this case it seemed quite thematic in favour of police handling crime and against vigilantism.

We have a father ranting about the police not helping and 'dragging the family's name through the mud' after the rape and murder of his daughter. Who then is arrested for assault in attempting to get revenge for it, and just as well he didn't get up the nerve to use the knife he'd bought for that purpose, as it turns out that guy was innocent.

We have more vigilantism when the murder in another case turns out to be a revenge killing of a woman (Lucy Payne) convicted for being complicit in the rape and murder of other women, our Mr Banks being upset that justice has now been denied. Finally, misguided vigilantism sees the killing of an innocent police officer, having mistaken him for the man who raped and murdered the woman mentioned in the previous paragraph when he was actually worked up in excess distress over her death and patrolling out of duty to protect women.

Early on Banks asks a forensic examiner if there were signs of struggle and she leaps to remind him that lack of such signs do not mean it was not rape, when in fact he was just wondering if there might be DNA obtainable from skin under the fingernails. But it's okay that she was overly-defensive of the integrity of rape victims like that because as it turns out she is a serial killer! Murdered Lucy earlier, killed the police officer earlier, mistaking him for a bad man instead of a good man, and murdered the guy who raped her many years ago instead of cooperating with police to bring him to justice.

It all felt a bit heavy-handed. Vengeful dad insults police, assaults the wrong man. Vengeful woman lies to police, murders already-sentenced convict, kills a cop in error, finally takes her own life when confronted with this. Normally I just want a mystery solved with detecting, not so much of the karmic leave it to police.