Chain of Events

'We've been looking for you,' they tell William Sandberg when they abduct him. Imprisoned at a secret location, this broken genius can only win his freedom by completing an impossible task. Out on the streets, people begin to die horrible, gruesome deaths. Every moment that William fails to complete his task, more will perish. The search is on to rescue William. But soon he realises the answer to the puzzle might be the most terrifying secret of all.