"Like a rocket," said Harrigan. "Queerest thing was that there wasn't a trace of him. The machine was gone, too--the same way as the last time, without a disturbance in the shop. He and his machine had simply vanished off the face of the earth and were never heard from again. "Matter of fact, though," Harrigan went on thoughtfully, "Vanderkamp's disappearance wasn't the really queer angle on the pitch. The other thing broke in the papers the week after he left. The neighbors got pretty worked up about it. They called the police to tell them that Vanderkamp's sister Julie was back, only she was off her nut--and a good deal changed in appearance, too. "Gal going blarmy was no news, of course, but that last bit about her appearance--they said she looked about twenty years older, all of a sudden--sort of rang a bell. So I went over there. It was Julie, all right; at least, she looked a hell of a lot like Julie had when I last saw her--provided you could grant that a woman could age twenty years in the few weeks it had been. And she was off her rocker, sure enough--or hysterical. Or at least madder than a wet hen. She made out like she couldn't speak a word of English, and they finally had to get an interpreter to understand her. She wouldn't speak anything but Dutch--and an old-fashioned kind, too. "She made a lot of extravagant claims and kept insisting that she would bring the whole matter up in a complaint before Governor Stuyvesant. Said she wasn't Julie Vanderkamp, by God, but was named Anna Van Tromp--which is an old Dutch name thereabouts--and claimed that she had been abducted from her home on the Bowery. We pointed out the Third Avenue El and told her _that_ was the Bowery, but she just sniffed and looked at us as though _we_ were crazy." I toyed with my drink. "You mean you actually listened to the poor girl's story?" I asked. "Sure," Harrigan said. "Maybe she was as crazy as a bedbug, but I've listened to whackier stories from supposedly sane people. Sure, I listened to her." He paused thoughtfully for a moment, then went on.