In The Defiant Agents, prolific science fiction writer Andre Norton offers up the best of both worlds: an action-packed read that is truly thought-provoking, as well. Subjected to an experimental procedure against their will, members of several ethnic groups have reverted back to the ways of their distant ancestors and are forced to try to survive on a primitive planet. Will they comply with the aims of this ethically dubious experiment, or will the test have unforeseen consequences?