A 13-year-old boy from St. Petersburg, Florida has been arrested in connection with the fatal stabbing of his grandmother.In Michigan, a man has been arrested in connection with a 1980 cold case murder of a pilot’s wife.The son of a deputy sheriff in Alabama was arrested and charged with the murder of a Sheriff of a neighboring county.Finally, in Coral Springs, Florida, a woman arrested for the murder of her gym buddy, who was found shot dead in her driveway.