The 10 Rules for British Period Dramas on TV

From Downton Abbey to Call the Midwife, British TV has been on fire lately -- and American audiences are burning for more. If you're an incurable addict like me, you've probably noticed a few trends, however. In my mind, they contribute to the comfortable familiarity of the British period drama -- you might not know where the next plot twist will take you, but you always know where it's all going in the end. I've cracked the code so you don't have to. Probably a verbatim copy of the rules handed out to producers and writers once they pass their British TV No Spoilers Security Clearance, here are my 10 Rules for British Period Dramas on TV.

Be warned: that means pretty much every piece of this blog post is a spoiler.