The seventh season premiere of Grey's Anatomy airs tonight at 9 p.m. on ABC. Don't expect Meredith to tell Derek about the miscarriage she suffered on last season's chilling finale.

That piece of information comes out next week, and when it does, Meredith will have kept the pregnancy and its failure secret for three months in the Grey's Anatomy universe. Why?

An emotional scene from the September 30 episode of Grey's Anatomy.

“The man was shot and he’s already feeling [responsible] for getting a bunch of people killed,” series creator and executive producer Shonda Rhimes explains to EW regarding that.

“So for her to tell him that the shooting also caused her miscarriage seems a little bit cruel. He doesn’t need one more thing to worry about,” Rhimes says, somewhat reasonably.

The question is how he'll react to the news. We have some clue in the form of pictures from the September 30 episode. Follow this link for pictures from "Shock to the System."

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.