The Sound of Terror

The Sound of Terror

Available on iTunes, Investigation Discovery, Science Channel, Travel Channel, HGTV, Prime Video, AHC GO, discovery+, Cooking Channel, Discovery Life GO, Animal Planet
S1 E5: In 1983, the Secret Service are on the trail of a counterfeiter. In a storage unit, they find sickening audio recordings of him torturing dozens of women. Analyzing the tapes, they realize that he may be one of the most depraved serial killers in history.