This is a preview of Project Brazen's latest investigative podcast, The SOUND: Mystery of Havana Syndrome. To listen to the rest of this episode, search for THE SOUND: Mystery of Havana Syndrome, wherever you get your podcasts.

In December 2016, a US official in Havana reported a debilitating and confounding illness. The symptoms included headaches; nausea; hearing loss; problems with memory and vision. Soon, a second official came down with the same symptoms. Then a third. Then a fourth. By the time the story went public in summer 2017, dozens of US diplomats, as well as some Canadians, had come down with what was becoming known as “Havana Syndrome.”

In this deep dive investigation, journalist Nicky Woolf peels back the layers of one of the most bizarre mysteries of the modern age. THE SOUND is a story about spycraft, technology, and the brain, and how the Cold War, maybe, never really ended.

New episodes will be dropping in THE SOUND feed on Mondays, so subscribe there now to make sure you don’t miss an episode.