Cat Chant admired his elder sister Gwendolen. She was a witch. He admired her and he clung to her. Great changes came about in their lives and left him no one else to cling to.

The first great change came about when their parents took them out for a day trip down the river in a paddle steamer. They set out in great style, Gwendolen and her mother in white dresses with ribbons, Cat and his father in prickly blue-serge Sunday suits. It was a hot day. The steamer was crammed with other people in holiday clothes, talking, laughing, eating whelks with thin slices of white bread and butter, while the paddleboat steam organ wheezed out popular tunes so that no one could hear themselves talk.

In fact the steamer was too crowded and too old. Something went wrong with the steering. The whole laughing, whelk-eating, Sunday-dressed crowd was swept away in the current from the dam. They hit one of the posts which were supposed to stop people being swept away, and the paddle steamer, being old, simply broke into pieces. Cat remembered the organ playing and. the paddles beating the blue sky. Clouds of steam screamed from broken pipes and drowned the screams from the crowd, as every single person aboard was swept away through the dam. It was a terrible accident. The papers called it the Saucy Nancy Disaster. The ladies in their clinging skirts were quite unable to swim. The men in tight blue serge were very little better off. But Gwendolen was a witch, so she could not drown. And Cat, who flung his arms around Gwendolen when the boat hit the post, survived too. There were very few other survivors.

The whole country was shocked by it. The paddleboat company and the town of Wolvercote between them paid for the funerals. Gwendolen and Cat were given heavy black clothes at public expense, and rode behind the procession of hearses in a carriage pulled by black horses with black plumes on their heads. The other survivors rode with them. Cat looked at them and wondered if they were witches and warlocks, but he never found out. The Mayor of Wolvercote had set up a Fund for the survivors. Money poured in from all over the country. All the other survivors took their share and went away to start new lives elsewhere. Only Cat and Gwendolen were left and, since nobody could discover any of their relations, they stayed in Wolvercote.

They became celebrities for a time. Everyone was very kind. Everyone said what beautiful little orphans they were. It was true. They were both fair and pale, with blue eyes, and looked good in black. Gwendolen was very pretty, and tall for her age. Cat was small for his age. Gwendolen was very motherly to Cat, and people were touched. Cat did not mind. It made up a little for the empty, lost way he was feeling. Ladies gave him cake and toys. Town Councillors came and asked how he was getting on; and the Mayor called and patted him on the head. The Mayor explained that the money from the Fund was being put into a Trust for them until they were grown up. Meanwhile, the town would pay for their education and upbringing.

"And where would you little people like to live?" he asked kindly.

Gwendolen at once said that old Mrs. Sharp downstairs had offered to take them in. "She's been ever so kind to us," she explained. "We'd love to live with her."