The New Sin is a play written by Basil Macdonald Hastings and first published in 1916. The play is set in London during the early 20th century and tells the story of a young woman named Mary who becomes pregnant out of wedlock. Mary's situation is complicated by the fact that she is engaged to be married to a wealthy man, and she must decide whether to tell him the truth or keep the secret to herself. The play explores themes of morality, social class,...