Tatort is a long-running German/Austrian/Swiss, crime television series set in various parts of these countries. The show is broadcast on the channels of ARD in Germany, ORF in Austria and SF1 in Switzerland.
A Swiss bank discovers some of its clients are becoming the victim of a brilliant blackmailer. The bank's president contacts David Christopher, a former agent with the U.S. Treasury, to help discover who the blackmailer is and to foil his plot. As Christopher delves into the mystery, he uncovers a complicated web of intrigue, car chases, and shoot-outs that takes all of his wits to unravel.
Thomas Krömer follows the traces of a brutal murder in werewolf-manner out of personal interest. After investigating for some time, the traces all point to one person: himself. Now, he has to find out whether he surprisingly turns into a blood-seeking werewolf at full moon without knowing it or if there is an other solution to the murders. Police are getting pretty suspicious after Thomas' own grandmother has been brutally slaughtered in her little fairy-tale-fashioned house in the woods, and it will soon be time for a full moon...
