The mind led him on through the subdivision and out to the highway. Once One realized he was being directed to return to the city, he used his gift on a passing motorist, being careful to remove the man's memory of him despite the damage it left behind. The driver would be plagued with migraines and memory retention problems for the rest of his life.
None of which mattered to One despite understanding what he did was harmful. He felt the Master close by, but he was clearly distracted by the child's body just returned to the lab. For the most part, One was on his own to fulfill his orders.
Capture the owner of the mind and bring him to the Master. Simplicity itself. If only that mind would hold still long enough to be caught. One never encountered another mind so slippery, like the edges of it were oiled with thought impossible to hold onto for long. There was a time or two he was sure he had it, only to have it slip away, the mind's mocking laughter pulling him on.