Why are true crime dramas becoming our new guilty pleasures?

The year has had its first water cooler moment with the success of Making A Murderer, the Netflix documentary exposing the seemingly wrongful conviction of small-time Wisconsin criminal Steven Avery.
As anyone who has ventured near the internet in the past two weeks will testify, the documentary, released with little fanfare on December 18, has become a phenomenon — fuelling endless online discussion and pet theories, and a clamour for a review of Avery’s 2005 murder trial.