Director Charlie Shackleton makes lemonade out of lemons after losing the rights to adapt Lyndon Lafferty’s 2012 true crime novel The Zodiac Killer Cover-up AKA The Silenced Badge. From the ashes of his abandoned documentary rises a fascinating exploration of the genre itself. Against the backdrop of gorgeous cinematography from Xenia Patricia, Shackleton talks us through his original plans, revealing deft commentary on true crime storytelling.

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