Anthropologist who lived for years with mountain gorillas in Uganda. Convicted of killing rangers and imprisoned, he later reveals he was protecting his ape family from poachers. After a vicious guard attacks another inmate, triggering his trauma, he violently retaliates, stops communicating, and eventually escapes using a pen to dig out a window lock to return to Africa.
The guard's brutality mirrors the poachers, triggering Powell's trauma and violent response.
Caulder is assigned to evaluate Powell, evolving from clinical observer to philosophical confidant.
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