Havoc reigns supreme at a diabetes clinic where several patients suddenly die or go into a coma at an alarming rate. The detectives trace this disastrous situation to a hacker that has invaded the clinic's computer system. Then things take a surprising turn when a vengeance-driven blind man emerges on the suspect list. Without revealing any further cogent plot points, it can be noted that guest star Dana Elcar was legally blind in real life. ~ Hal Erickson, Rovi