River is trapped in France. Back at Slough House, the Dogs have come for Lamb.
As VIXAL-4 exceeds its programming limits, Dr Hoffman races against the clock to stop what he might have inadvertently started.
When VIXAL-4 profits from a human disaster, Dr Hoffman becomes increasingly paranoid and his investors grow concerned.
Dr Alex Hoffman is attacked on the eve of the launch of his revolutionary AI, but not before receiving a mysterious antique book.
