By that time, through Kolp's investigation that the vessel which supposedly delivered Caesar is from a region with no native chimpanzees, Breck learns that Caesar is the ape they are hunting. Caesar reveals himself to MacDonald after he covered for the ape twice when called by Breck on Caesar's whereabouts. While MacDonald understands Caesar's intent to depose Breck, he expresses his doubts about the revolution's effectiveness along with Caesar being dismissive of most humans. Caesar is later captured by Breck's men and is electrically tortured into speaking. Hearing him speak, Breck orders Caesar's immediate death. Caesar survives his execution because MacDonald secretly lowers the machine's electrical output well below lethal levels. Once Breck leaves, Caesar kills his torturer and escapes.