The Call is a novel published in 1985 by the American writer John Hersey. The novel, which is in the form of a fictionalized biography with letters and excerpts from Treadup's journal, presents the experience of David Treadup, an American Protestant missionary in China during the first half of the twentieth century. As the novel progresses, and China undergoes Japanese invasion and communist revolution, Treadup reconsiders whether his efforts to help China were useful and questions the usefulness of the Christian mission. Hersey based Treadup on a composite of six historical China missionaries, including his own father. Other historical figures appear, sometimes under their own names.