The team, led by Ella, defies Shade's orders and infiltrates the Meat Factory, successfully rescuing Drum. They then leave cautiously, using the Deceptors to mask their trail. While resting among the branches of a large tree, Ninde telepathically detects an Overlord. The detection proves not only to be hard mentally on her since the Overlord is of human or greater intelligence, but also emotionally hard: Ninde discovers that the Overlords are essentially human. Despite the difficulty, she discovers that the Overlord may know something about "a mind in a machine" -a dangerous thing for them, since Shade - a machine intelligence- is their leader and benefactor. They continue, to discover on reaching the Submarine that it has been invaded by an Overlord, Red Diamond, and that all of the people inside have been killed or captured. Fortunately, Shade had realized long before that the Sub was not a permanent base, and established multiple supply caches throughout the city in case a team was stranded in the field or the Sub was taken. True to their training, the team heads immediately to the nearest cache - to discover Shade, who escaped, apparently by chance, while testing a mobile robotic body for himself based around the Thinker. Shade's escape is doubly fortuitous in that the Overlord used an electromagnetic pulse weapon to disable the Submarine; had he been within range of the weapon, he would have been incapacitated.