ith the virus spreading, Harry Pearce decides to take extraordinary action to find out who might have an antidote. They determine that one of four countries likely has it and he decides to kidnap and if necessary torture the station heads for India, Russia, France and the United States to get the serum. Harry turns to a former colleague for assistance in extracting the information. Zaf and Adam meanwhile have both been infected and the clock is ticking. Adam is released but Zaf is kept prisoner by the unknown assailants working for 'Copenhagen'.

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