Cousin Deborah's Story: Or The Great Plague is a historical fiction novel written by Lucy Ellen Guernsey and published in 1869. The story is set in London during the 17th century, where a deadly outbreak of bubonic plague is sweeping through the city. The protagonist, Deborah, is a young woman who has recently moved to London to live with her cousin. As the plague spreads, Deborah becomes increasingly involved in helping those affected by the disease,...