Exclusive: The Mind-Blowing Torchwood Twist No One Will See Coming

First up, here’s what we know about Torchwood‘s rapturously anticipated fourth season (airing stateside on Starz): It will have an extra- international flavor (including an extended stopover in L.A.), Bill Pullman has been cast as the Big Bad, and joining Captain Jack’s team full-time will be Mekhi Phfifer and Alexa Havins. But here’s what we don’t know: What it’ll be about! Well, put on your thinking caps and hold onto your hats.

The new season of Torchwood asks the provocative (and arguably horrifying) question, “What would happen if the entire human race became immortal?”

Now before you hand me over to the 456 for committing the ultimate injustice (impossible asterisk quizzes) know this: I’ll be filling in letters throughout the day, culminating with an all-out reveal right around 5:30 pm/ET — which, coincidentally, is around the time Torchwood boss Russell T. Davies will be meeting with reporters at the Television Critics Assoc. press tour to talk up (you guessed it) the new season.

So here’s what you do now: Start breaking down the riddle in the comments section, come back later (and later still) as I fill in the blanks, and then plant yourselves here at around 5:30 pm/ET for the full reveal and (hopefully) bonus details live from the Torchwood panel at TCA.

Oh, and one last thing: Said premise is going to make Torchwood: Children of the Earth look like mere child’s play. You thought that conceit was dark? Just wait.

THIS JUST IN FROM PRESS TOUR: “Not a single person on Earth dies” confirms Davies of the premise for the fourth season, which will bear the title Torchwood: Miracle Day. “The old stay old. It’s great news for some people, but globally it’s an instant population boom. Earth relies on people dying. Suddenly you’re affecting everyone on the planet. That’s where the Torchwood team comes in.”