The CW Cancels Reign After Four Seasons

The period drama's upcoming fourth season will be the show's last, TVGuide.com has learned.

The drama series, which stars Adelaide Kane and Megan Follows as the young queen Mary and Catherine de Medici, respectively, is currently filming, which means the show will at least have a proper conclusion as the writers are crafting a series finale.

Season 3 moved to Friday nights where it averaged less than a million viewers in adults ages 18-49 and a 0.3 rating -- and the fact that it was renewed for a fourth season at all was a bit of a surprise.