Trivia

In the novel, Sophie actually has two sisters. The second is named Martha, who is sent to be a witch's apprentice but finds a spell to change her appearance and switch with Lettie so that she can work in the bakery instead. So when Sophie goes to see "Lettie" at the beginning of the film, it should have actually been Martha in disguise. Martha is also the character that Markl falls in love with in the book. In the film Martha is mentioned by the shop girls, saying that Howl ate Martha's heart, but not presented as Sophie's sister. See more