'Almost since the beginning of time, man has committed crimes that have defied our ability to explain. Among these are the most heinous crimes of all, murders. The taking of an innocent life goes against our most basic principles. Yet, murders continue to occur and sometimes they go unsolved.

Even with today’s most innovative and groundbreaking technologies, not all criminals are caught. We hear that there is no such thing as the perfect crime. And undoubtedly, as our crime solving methods and abilities continue to advance, some currently unsolved crimes will be solved. But sometimes, it just doesn’t happen.

Victim’s families and friends are left never knowing the who and why of their loved one’s passing. It is for their sake that law enforcement continues to work to solve these unsolved murders.

Following are some of the most famous and infamous cases that are still waiting. They are murders, unsolved on Audio Format