Through the Postern Gate is an Edwardian romance set in the English countryside. Love and passion intertwine but true to Edwardian morality there is no hint of sexual motivation or lust. Cambridge University in the early 20th Century knew no greater beauty than Christobel Charteris. She is revered by every student but loved by only one. However, Christobel is almost betrothed to an ageing professor and desires to be as loyal as posssible.