Endicott was born in Golden, British Columbia in 1958, the daughter of an Anglican priest; she grew up in Vancouver, Halifax and Yarmouth, Nova Scotia, and Toronto, Ontario.
In 1992 she went farther west with husband Peter Ormshaw to Mayerthorpe, Alberta, on his first posting with the RCMP;[1] they have since lived in Cochrane, Edmonton, and Saskatoon.
Her long poem about the Mayerthorpe incident, "The Policeman's Wife, Some Letters", was shortlisted for the CBC Literary Awards in 2006.
Her third novel, The Little Shadows, published by Doubleday in 2011, was longlisted for the Giller Prize and shortlisted for the Governor General's Award for Fiction.
Although fiction, it pulls deeply from Endicott's own experiences in Mayerthorpe, Alberta, her husband's first posting with the RCMP; it was written many years after her poems on the same subject.