Watch Hear No Evil

Police make a grim discovery while studying vital clues in the form of audio files captured by a murdered woman's husband.

Investigators track a counterfeiter to a storage unit where they find audio recordings of him torturing dozens of women; analyzing the tapes, they realize he may be one of the most depraved serial killers in history.

Police investigate the murder of a mother who was gunned down while next to her toddler, then they find a Dictaphone that leads them down a trail of intimate audio recordings to the possible identity of her killer.

A woman is accused of murdering a stranger, and she must clear her name by secretly recording a confession from the man who is allegedly framing her.

After a couple's fight ends in murder, a tape recording becomes evidence at trial, then more tapes are found, laying out a history of violence for the jury.

In Little Falls, Minn., a retiree's peace is shattered by a home break-in, culminating in a gruesome double homicide; investigators discover audio recordings of the killings, revealing what really happened and the killer's true motives.