A headless corpse found in a flat becomes a source of tension for the police with his identity being linked to a Basque anarchist! Excerpt: "Look here, Pointer. Suppose you hand over the reins of that case you're on to Clark. He can carry on all right now. Superintendent Maybrick of Hampstead wants help. Or rather, I think he needs it. He's just been called in to a horrid mess, a murder, in one of the flats in his district. From certain things he thinks it's an anarchist plot gone wrong, 'biter bit' sort of thing," Major Pelham said vaguely; "he's got into touch with the Foreign Office already. So by this time there's sure to be some F.O. man sprinting along to have a first look."