I must confess that I haven’t seen this French mini-TV series but it comes highly recommended and I’ll try and download it.
Les Rois Maudits is the history of Philippe the Fair, the King of France who finally suppressed the Templars. The angle taken in the TV series is that King Philippe had basically run out of money and eyed up the Templars as a tempting source of booty. And the rest, as they say, is history.
Here is the start of the series: