“It can start with a knock on the door one morning. It is the local Indian agent, or the parish priest, or, perhaps, a Mounted Police officer.” So began the school experience of many Indigenous children in Canada for more than a hundred years, and so begins the history of residential schools prepared by the Truth & Reconciliation Commission of Canada (TRC). Between 2008 and 2015, the TRC provided opportunities for individuals, families, and communities to share their experiences of residential schools and released several reports based on 7000 survivor statements and five million documents from government, churches, and schools, as well as a solid grounding in secondary sources. A Knock on the Door, published in collaboration with the National Research Centre for Truth & Reconciliation, gathers material from the several reports the TRC has produced to present the essential history and legacy of residential schools in a concise and accessible package that includes new materials to help inform and contextualize the journey to reconciliation that Canadians are now embarked upon.

A significant section of the book is from "What we have learned: principles of truth and reconciliation" (Truth and Reconciliation Commission of Canada).