 In 1997, underwater sensors operated by NOAA detected an extraordinarily powerful sound in the Pacific Ocean. It was picked up thousands of miles away. Its origin was never definitively identified. Some scientists proposed a natural explanation. Others considered possibilities that remained inconclusive. The recording, known as "The Bloop," remains one of the strangest sounds ever captured beneath the ocean's surface.

<p>&nbsp;In 1997, underwater sensors operated by NOAA detected an extraordinarily powerful sound in the Pacific Ocean. It was picked up thousands of miles away. Its origin was never definitively identified. Some scientists proposed a natural explanation. Others considered possibilities that remained inconclusive. The recording, known as "The Bloop," remains one of the strangest sounds ever captured beneath the ocean's surface.</p>

Every episode tells a true story. A disappearance. A crime. A case that was never resolved. No dramatization. No speculation. Only the facts, told with precision. Case Zero is a documentary true crime podcast narrated in the third person, designed to be listened to closely. New episodes every week.

<p>Every episode tells a true story. A disappearance. A crime. A case that was never resolved. No dramatization. No speculation. Only the facts, told with precision. Case Zero is a documentary true crime podcast narrated in the third person, designed to be listened to closely. New episodes every week.</p>