Kate and Michael finish their work on Alice Munezero's case in France, but are shocked when indicted Rwandan and Congolese war criminal Patrice Ganimana arrives in the UK. Excited by the chance to prosecute him, Michael is unsettled to learn that an old rival is handling his defence. Meanwhile, this turn of events prompts Alice to delay her own return to Rwanda, and a difficulties multiply for an extradition of Ganimana to the International Criminal Court, Kate and Michael's relationship begins to fray.
Robin Weaver features as Det Stephens.
Watch on BBC2 at 9pm on Monday 1st October.