Calibre

Somewhere in the teeming heart of London is a man on a lethal mission. His cause: a long-overdue lesson on the importance of manners. When a man gives a public tongue-lashing to a misbehaving child, or a parking lot attendant is rude to a series of customers, the “Manners Killer” makes sure that the next thing either sees is the beginning of his own grisly end.

When she starts mailing letters to the Southeast London police squad, he'll soon find out just how bad a man's manners can get. The ...