This being a Seventh Doctor and Ace story, the “Dark Doctor” is in the ascendency (Beige coat, Doctor 7.2). Here, he has no complex and Machiavellian plan to go wrong, but he does wing it somewhat when he discovers what’s going on. Instead of being devious, he seems somewhat cowardly and aloof. Rest assured dreadful things will happen in the name of maintaining order, but it could be worse; Blackman gives the Doctor a pragmatic reason for his actions, when she could have gone for a much darker, more ambiguous route. Instead, he’s merely an alien consequentialist, which is completely fitting for this Doctor’s character. I would say that the Eighth Doctor – a deliberate contrast embracing an absolute morality – would have done things differently, but a very similar idea is explored in the Big Finish audio Dark Eyes, and Paul McGann’s Doctor reacts in much the same way. The Seventh Doctor – bar one or two Pertwee-isms – is well realised, it’d be interesting to see what McCoy would make of the role as a Big Finish production. Ace is occasionally jarring. It feels like Blackman doesn’t quite have as firm a grasp on her character as she has with the Doctor, but there is some good build-up to their relationship in Season 26 as Ace challenges him over his beliefs. The execution here is somewhat blunt, though. Full marks for ideas (there are some nice plot-driving Science Fiction concepts in here), but through the characters’ dialogue there is a lack of depth to their presentation. Characters simply flat-out state what the central theme is, and then barely reflect on it. Overall, The Ripple Effect is the darkest of these eBooks so far, and is well worth reading for the ideas – which are unexplored so invite further cogitation – even if it isn’t a fully successful evocation of the main characters. Please, if you can, buy our charity horror stories ebook, Den Of Eek!, raising money for Geeks Vs Cancer. Details here.