Are the Russians behind the Havana syndrome, which has struck American agents?. Adam (first name has been changed) works at the United States Embassy as a diplomat.

In reality, he's a secret agent. And he's never felt this before: a noise coming from nowhere, high-pitched, deafening to the point of compressing his head, "like being hit head-on by a wave or a baseball bat." In the months that follow, migraines and vision and hearing problems do not go away.