Rey and Zill have worked as investigative journalists for a half century, and as producers at 60 Minutes for a combined 38 years. Their work covers the terrain where intelligence, government secrecy, and human cost intersect. Together, they spent nearly a decade reporting on the attacks on American intelligence officers, diplomats, and soldiers now known as the Havana Syndrome, an investigation that took them across four continents, through classified documents, medical records and whistleblower testimony, and inside the story the U.S. government worked hardest to bury. That investigation became the foundation for this book.