The killer is Mrs. Peacock because, her pseudonym (peacock) is an animal that is usually portrayed as vain and willing to do anything as long as it's for the benefit of themselves; since we know her husband is of great authority,
The killer is Mrs. Peacock because, her pseudonym (peacock) is an animal that is usually portrayed as vain and willing to do anything as long as it's for the benefit of themselves; since we know her husband is of great authority,