Kurt Wallander is a fictional police detective created by Swedish crime writer Henning Mankell. “Before The Frost” is the tenth Wallander book to be translated into English. You can read more in Wikipedia. Moreover, Kenneth Branagh has made 3 TV adaptations, one of which is shown regularly on public television.
“Before the Frost” is a bit different in that it features not only the aging Kurt Wallander but also his daughter Linda who is about to enter the police force as a young rookie. Religious fanaticism is the central theme (a flavor somewhat like “The DaVInci Code” but MUCH better written).
I’m hooked, so I will probably read the entire Wallander series.