Dark Winter by David Mark
DS Aector McAvoy is a man with a troubled past. His unwavering belief in justice has made him an outsider in the police force he serves. When three seemingly unconnected people are brutally murdered in the weeks before Christmas, the police must work quickly to stop more deaths. It is only McAvoy who can see the connection between the victims. A killer is playing God - and McAvoy must find a way to stop the deadly game.