The Doctor toys with a kid's life and the Silurians return to our screens only to be beaten by a meals-on-wheels van. * * * The Doctor fails to take his travelling companions to Rio in 2020 and instead lands them in an all but deserted Welsh valley. There, two scientists are running a drill kilometres into the planet’s nether regions for goodness knows what reason — Because it’s there? — when they unwittingly awaken seemingly the Earth itself! When the subterranean threat chows down on Amy, Doc and Rory team up with a few of the locals and, armed only with a meals-on-wheels van, a pair of RayBans and a Dennis The Menace catapult, must once again save mankind. * * * 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 GOOGLE+: plus.google.com/+Whobackwhen YOUTUBE: WhoBackWhen.com/YouTube TWITTER: @whobackwhen Toodle-Pip!