Saint Dane is right. The Reality Bug has become far too realistic; its use of fears to dilute the jumps has a placebo effect on people, in that if they die in their fantasy, the death is real. Aja put Lifelight into suspense to keep the jumpers safe and to try to find a solution. Only one man can stop the rapidly evolving virus; Dr. Zetlin, who invented Lifelight and the only one to know of the origin code, the key to purging the bug from the processing code.