An Australian couple are jailed for the shocking rape and torture of their daughter over 13 years. Yet two of their children insist they are innocent, and no-one noticed the violent abuse. Could this be a grave miscarriage of justice?

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Shadow of Doubt is written, researched and presented by Richard Guilliatt. It's produced and edited by multimedia editor, Lia Tsamoglou. Claire Harvey is The Australian's Editorial Director.