Neuroscientist Robin Lund is puzzled by her lab chimpanzee Chelsea's reaction to the experimental drug, Mem-G. Instead of restoring short-term memory recall in dementia sufferers as designed, Robin suspects that Mem-G is enabling Chelsea to experience ancestral memories encoded in her DNA.To test this hypothesis, Robin begins taking this drug herself. What she learns is both stunning and dangerous: her mother is not who Robin thought she was and a...