LIE: 'I check the Range Rover dash. The keys are in there. The sirens are closing in. There's a police helicopter coming over the hospital.' KILL: 'I have to decide. Decide right now. I can keep out of trouble. Not get involved. Just run away through the park and go home and pretend none of this has happened. Or I can help Becca.' WALK AWAY: 'I stare into her eyes. Those deep blue eyes. Just for a split second. I tell her, "get in the car".' Joe and Becca uncover a deadly secret. A lethal bioweapon is about to be unleashed. Millions will suffer a terrible death. Now they are being hunted...

18-year-old Ryan is on a gap year adventure, working for a medical charity in Nepal. In his own words he is 'up for anything' and when a local girl begs him to investigate why her 16-year-old friend Kami never came back from Everest, Ryan cannot resist the challenge. A solo journey takes Ryan deep into the mountains where his detective work finally pays off. What emerges is a shocking story of fatal human errors, a twisting tale in which life and death decisions are distorted by ambition, ego and greed.