Lethal Sky — Greg Barron

A light aircraft flies over Sydney Harbour carrying the spores of a deadly microbe, enough to kill the people below and render the city uninhabitable for decades. Intelligence agent Marika Hartmann races to the scene aboard a taipan helicopter packed with Australian commandos, unable to shoot the plane down for fear of releasing the lethal cargo. Can she save her city? In Western Europe and America millions of ordinary people start their day, unaware that a swarm of powerful new weapons, armed with the same biological agent, gather in the skies. In London PJ Johnson leads a team of Special Forces soldiers to find the terrorists' base of operations as biologist Jan Sloven works furiously to decode the conundrum left by a deranged scientific genius - but time is against them all. Action and adventure, plots and conspiracies all combine for a breakneck thriller that feels terrifyingly real.