LATER, SPARKS WAS SURE that Graydon had something to do with the decision that came down from above to use one of ‛their own’ to test the Paths’ threat response. It made no sense, of course. Scientists didn’t experiment on themselves. They used volunteers or occasionally prisoners. But the word came, apparently, that as none of the animal tests had yielded useful results, a scientist was required to move the experimentation to the next level. As the tests were top secret, the person had to be someone who was already involved in the study and understood the required observations. There was no drawing of straws. Sparks was told by the others that he would be the one to approach the Paths with a scalpel, as Rogers had on the quarantine station before falling into a coma. In vain he’d search