A man sentenced to death for the slayings of a young Texas couple camped in the Idaho wilderness must be released or retried, a federal appeals court ruled Tuesday. Mark Henry Lankford has been on Idaho's death row for more than two decades for the 1983 bludgeoning slayings of Marine Capt. Robert Bravence and his wife, Cheryl. However, the 9th U.S. Circuit Court of Appeals ruled that Lankford received ineffective assistance from his attorney