It was the coldest of cases. Twenty-two years ago, the body of a young girl wasdiscovered inside a cooler stowed in an embankment along Manhattans HenryHudson Parkway. New York City Police didnt know her name or age. No missingperson report was ever filed. Detectives called her Baby Hope. After an investigation lasting more than two decades, police announced Saturday that they had a confession in Baby Hopes killing and had made an arrest: her cousin, 52-year-oldConrado Juarez. Police also made public her name: Anjelica Castillo, 4. Juarez was arraigned Saturday night and charged with second-degree murder for Anjelica's death, according to the criminal complaint. "Public outreach, forensic investigation and old-fashioned pavement pounding leddetectives to Juarez," said New York Police Commissioner Ray Kelly,praising the work of investigators who had labored almost obsessively to closethe case. The investigation thawed this summer when an anonymous tipster led pol...