Chief Inspector Fischer is retired. His stubborn belief in the innocence of a wrongfully convicted woman had led to a falling out with his team. Out of the blue, Konstanze asks him for help, with a fresh lead prompting her to reopen the case. Liane Sievers is serving a twelve-year sentence for killing her boss, but Fischer never stopped questioning the lack of a compelling motive for the crime. As Liane grows desperate in prison, her family fights for a second chance at justice.
