Heidi Cron is living in a prison of her own making. In the grip of a “Downton Abbey” obsession, she downloaded season three from the UK this fall. She got her fix of Lady Mary, Mr. Bates, and the Dowager Countess, but because the show hasn’t started its new season here, her delicious knowledge came at a price.
“My friends act like I have a communicable disease,” said Cron, an interior designer from Somerville who wishes the Jan. 6 season premiere would arrive already so she would have someone to discuss the show with. “It’s so goofy. It’s only TV.”