A South Florida man is executed for the 1992 murder of a court clerk administrator; the suspect in the shooting of a Daytona Beach police officer pleads not guilty; and a Bunnell man is arrested 29 years ago in connection to a pair of shootings in a quiet Palm Coast neighborhood that killed two and injured one.   Special guests: Flagler County Sheriff's Senior Commander Mark Carman and retired Flagler County Sheriff's Office detective Warnell Williams.