Inter-temporal infanticide and a divisive song-and-dance number. We spend more than twice its runtime dissecting The Fifteenth Doctor's first big adventure. * * * A mysterious cloaked figure enigmatically leaves a newborn baby behind on the collection doorstep of St. Building Atmosphere’s Church one snowy Christmas Eve, departing without so much as a “Goodbye, Ruby Sunday”. Who could hang that name on her? Flash forward 18 years and the foundling has grown up to become another wide-eyed portion of grist for Davina McCall’s sentimentality mill. But just when Ruby hopes to find out about her family, her foster mum Carla gets a new baby with the same birthday to care for over Christmas. Enter the Fifteenth Doctor, catching Ruby’s gin and tonic here, sprinting down roof ridges there. Turns out her accidents were no accident, this series of coincidences indeed no coincidence, as every adopted character ever fostered in the show has become fair game for the gobblin’. * * * Check out WHOBACKWHEN.COM for more information, Doctor Who TV Serial and Audiobook reviews, ratings and ramblings, and loads more podcast episodes. WEB: WhoBackWhen.com FACEBOOK: Facebook.com/WhoBackWhen Instagram: Instagram.com/whobackwhen YOUTUBE: WhoBackWhen.com/YouTube TWITTER: @whobackwhen Toodle-Pip!