Betrayal has a deep fascination. It captures our imagination in part because we have all betrayed or been betrayed, in small or large ways. Despite this there has been little serious work on the subject. It was this absence that inspired this book.

As Akerstrom notes, betrayal is something that most people have encountered at some point in their lives. She defines betrayal as a breach of trust, when information is shared beyond an agreed upon boundary of relations, whether that boundary is a pair of friends or a nation. Taking as a point of departure Simmers work on secrets and...