[close] A science thriller, Threshold features a face-off between Dr. Jason Waters, the founder of the DNA-researching Tucsome Project, and Jeremy Ross, a young and brilliant Ph.D. Their scientific and investigative paths cross when Secretary of Defense Warren T. Walker is found dead with gouge wounds to his face, apparently by his own hand. When Ross, working with the CIA, discovers that Waters has pilfered $60 billion to unlock the source of DNA coding, a showdown ensues that leads to an explosive climax.