Using satellite video, Ace’s team located the farm owned by Amy’s parents, whom she and Jamie were visiting on the fateful night. They zeroed in on the signature of a vehicle that arrived shortly before the time of the murders and that departed at high speed minutes later. They tracked it west on State Road 62, all the way past the town of Leavenworth, before it switched to an unpaved forest-service road. A few miles later, it went off-road, whereupon its heat signature was effectively masked by the canopy of trees.
