‘So you think he’s going to strike again?’ Abberline said. ‘I am a physician of the body, not the mind,’ Phillips replied, ‘but if my many years of practice have taught me one thing, it’s that the two are inextricably entwined. Wicked thoughts can lead to wicked deeds, and wicked deeds can, in turn, poison the mind further. The man who has committed these murders is a dog chasing his own tail. He’ll never catch it, try as he might, so you must catch him.’ ‘Easier said than done,’ the detective muttered.