Meltdown

"A lethal new drug with devastating side effects, known as Meltdown, is threatening to destabilize society. Dudley knows that the security services have to act fast, and when his 4 x 4 arrives at their remote hideout in the Canadian lakes, eighteen-year-old Danny and his grandfather, ex-SAS hero Fergus Watts, are once again sucked into a deadly undercover operation and a race against time."