Yes, Gatiss is Lazarus, a scientist who has discovered how to reverse the ageing process by enlarging your DNA, or something similar that said ‘DNA’ a lot. Having made himself young and despatching of his partner – the second Dinnerlady this series, and counting – he proceeded to munch his way through one other party attendee before galloping after the Doctor, failing to notice there’s less meat on the fellow than in the average school burger. The episode also gave plenty of screen time to Martha Jones’ family. Happily, her father has been shoved out the nearest door (or, more hopefully, put in the cupboard with Helen Raynor). Her mother, Shouty Nurse-Woman from Casualty, is good at shouting, as her name would suggest. And even though Martha spent a fair bit of time gushing with sister Tish about how wonderful the Doctor is, which is unfortunately de rigeur these days, it seems like a largely alright family unit. What was best about this episode, though, was the right balance between talk and action, or yap and zap, if you will. After escaping into Southwark Cathedral at the point that rubbish episodes normally finish up, we get the Doctor talking in an actual conversation, not a yelled lecture, with a very human enemy. Most exciting of all, the trailer at the episode’s close showed us what to expect in the rest of the series. No surprises, but hee hee hee, doesn’t it look great? Oh, Doctor Who, I’m sorry I ever doubted you.