James scrambles to mitigate the scandal’s impact, while a devastated but determined Sophie remembers happier moments and Kate debates her next move.

Louisa makes her move on Pashkin. Catherine makes moves of a different kind when she plays high-stakes chess with a sinister stranger.

Bill tries to reboot his authority by getting his team to focus on the difficult unsolved crimes, including that of the ‘Boston Bandit’ who was responsible for a series of…