According to Nikki's file, she's been inside since May 1997. However when Helen reviewed Nikki's file, it included a note from the trial judge which was dated 1996. In addition, when Nikki's ex-girlfriend Tristan dumped her she mentioned that she'd been waiting for 2 years. Yet Helen says "10 years, that's 9 more years before anyone considers it". This series is set in November 1999 which was the date on the blackboard when Tessa Spall had her photo taken on entry to Larkhall.