5. Alferd Packer
The oldest serial killer in this list of 10 American cannibal serial killers, Alferd Packer went on an expedition with five other men during a harsh winter in the Colorado mountains in 1874. When only he returned, he claimed that fights had broken out where people killed each other for food and admitted to consuming their flesh to survive. However, several holes were poked in his story, after which he fled and remained in hiding for several years. He was then caught and sentenced to life, which was later reduced to a mere 40 years.
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