This is it: the first true milestone of Doctor Who’s 21st century resurrection. The first episode written by a future showrunner, the award-winning Steven Moffat. The first episode to feature John Barrowman’s incomparable Captain Jack Harness. The first episode to truly send terrified children running to hide behind the sofa — the soft cadence of “MOMMY” floating through the air — courtesy of a gas-mask-wearing zombie, in the shape of a 4 year old child. This is THE EMPTY CHILD, where modern Doctor Who forever transformed. Join us this week as we travel back to both 2005 and 1941 to relive this moment.