An email written from a Sydney priest to a Melbourne author saying how much he enjoyed her latest book was the catalyst for an enduring and surprising friendship. Over the years they discussed everything from dinner party menus and shoes to family, faith, grief and love. Their correspondence has been collected in The Attachment, described as ‘a demonstration of how to have a conversation and a friendship’. Ailsa Piper and Tony Doherty join Margot Saville and share the story of their friendship.