When Muriel Spark met Shirley Hazzard, in the early 1960s, both were rising stars at The New Yorker. Spark, a Scot, was a newcomer to New York. In her early forties, Spark was a decade older than Hazzard, yet they bonded and wrote to each other regularly. Despite being two of the best stylists in English of their era, they often wrote like teenage besties.