Howl's Moving Castle - The book

Sophie looked warily at the demon’s thin blue face. It had a distinctly cunning look as it made this proposal. Everything she had read showed the extreme danger of making a bargain with a demon. And there was no doubt that this one did look extraordinarily evil. Those long purple teeth. “Are you sure you’re being quite honest?” she said.
“Not completely,” admitted the demon. “But do you want to stay like that till you die? That spell had shortened your life by about sixty years, if I am any judge of such things.”
This was a nasty thought, and one which Sophie had tried not to think about up to now. It made quite a difference. “This contract you’re under,” she said. “It’s with Wizard Howl, is it?”

Diana Wynne Jones. Howl's Moving Castle - файл с книгой в библиотеке Fictionbook