“When she slept, she began to dream whole conversations with Charlie. He spoke to her in the same sweet voice as our father’s Nat King Cole albums. In her dreams, he told her secrets of the animal kingdom; he told her his frustrations and he told her, again and again in his beautiful baritone, that he loved her.” A family’s participation in a chimpanzee experiment drives two sisters apart in this novel excerpt from Kaitlyn Greenidge.