Angel and the French Widow

There is nothing Agnes Turner (née Carmichael) hates more than cruelty to animals. So when she sees a pup being abused by a boy she takes instant action. Days later her car is vandalised and so sure is she that the same boy is responsible that she takes the precaution of going to the police. However, when Agnes' French neighbour, a woman who bears a striking resemblance to Agnes, is found dead, a more direct approach is called for.
The boy is a drug addict and careless so it isn't long before Agnes has a chance to dispense her own unique and deadly form of justice!