This episode we delve into the world of unsolved crimes, specifically, murder sprees. Now these aren't your run of the mill crimes of passion or greed, these have all been credited as being the work of a "serial killer". To make these cases that much more intriguing and disturbing, non of these killers were ever apprehended. We try not to tread over the old stalwarts of this topic like The Zodiac or Jack the Ripper, but instead we've found five we bet you haven't heard of. So come along with us for an hour and hear the facts and figures of 5 serial killers that were never caught.

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