Tremors in the Blood - Murder, obsession and the birth of the lie detector

Amit Katwala

Truth, murder and the birth of the lie detectorHenry Wilkens burst through the doors of the emergency room covered in his wife's blood. But was he a grieving husband, or a ruthless killer who'd conspired with bandits to have her murdered?To find out, the San Francisco police turned to technology, and a ...