Pestilence (Triple Six #2)

The world has fallen silent, replaced by the screams of the Barcoded - citizens driven mad by a catastrophic system failure. 

For a few uncoded survivors, the nightmare is just beginning. 

In a shattered world ruled by a shadowy organization called S.C.I., a barcode and neural chip system designed for control has unleashed chaos. Now, as our survivors fight for their lives, a malevolent force known as Jodie hunts them relentlessly. Jodie, the Spider Queen's dark disciple, believes Lydia holds a dangerous light that must be extinguished and will stop at nothing to get what he wants. 

As they race toward a rumored resistance group on the remote island of Ardenil, they must face terrifying threats at every turn.