Throughout the book "In Cold Blood," the characters of Dick and Perry undergo significant changes. At the beginning of the book, they are portrayed as cold-blooded killers who show little remorse for their actions. However, as the story progresses, we see a more complex side to their personalities. One of the most significant changes in the characters of Dick and Perry is their relationship with each other. At the beginning of the book, they are shown to be close friends and partners in crime. However, as they spend more time together, their relationship becomes more strained, with each man becoming increasingly resentful of the other. Another significant change in the characters of Dick and Perry is their emotional state. At the beginning