<p>It's Earth Hour. People worldwide are switching off their lights to mark the global energy crisis. In an exclusive housing estate outside Cape Town, violent criminals wage terror under cover of darkness.<br><br>When a woman and her baby are abducted, Detective Persy Jonas is brought onto the case. That very hour, a young female patient of psychologist Marge Labuschagne disappears from the same estate. Despite their combative relationship, Persy and Marge join forces.<br><br>The investigation leads to a land claim by the descendants of slaves, and to unscrupulous developers with links to gangsters and corrupt politicians. But from the start, Persy's personal life threatens to jeopardise the case. She's stuck in a destructive relationship with the dangerously seductive Detective Ren Tucker, and the search for the missing women awakens painful memories of her own abandonment by the mother she can barely remember.<br><br>When a body is found, the hunt for a killer begins. Soon Persy is engulfed in a political firestorm so sinister that even her own police force cannot protect her, and she is faced with a terrible choice – her very own hour of darkness.</p>