Spooks

Nine people die after taking paracetamol. Section D finds that a computer hacker breached the database of a pharmaceutical company and tainted select batches of the drug with a poison. Later, the hacker wipes out several bank accounts. Section D and the National Hi-Tech Crime Unit (NHTCU) trace the hacking to a mosque. However, when a special forces team storm it, they find nothing. The hacker strikes again, manipulating traffic lights and redirecting 999 calls to sex chat lines. Adam later realises Islamic extremists are not involved when he hears the hacker demanding ?100 million in diamonds. Ruth has dinner with NHTCU officer Andrew Forrestal when she realises he is the hacker, and is kidnapped. He reveals his motives; he invented a G& J algorithm, which allows the user to hack into any computer system, however his colleagues took all the credit for it. He is given the diamonds, but dies later because they were coated with synthetic cobra venom. Meanwhile, Danny has trouble dealing with Zoe's departure. Will confronts him about her whereabouts. Despite being under Harry's orders not to reveal her location to him, Danny eventually tells Will she is in Chile. Later, Danny learns from a postcard that Zoe and Will are back together.