article_snippet: A massive search turned up nothing .
article_snippet: Over four decades, police have pursued numerous leads and periodically identified potential suspects.
article_snippet: A sketch of that man, who had long hair and a mustache, was created and circulated, but it didn't lead to any arrests.
article_snippet: One person who provided details to a police artist said the man had been 'fixated' on the girls.
article_snippet: His mug shot from that arrest strongly resembled a sketch in the case that had been drawn based on a witness's description of a man at Wheaton Plaza who was staring at the girls and following the girls, according to the affidavits.
article_snippet: The massive investigation that followed the girls disappearance brought in countless tips and widespread national and local media coverage.
article_snippet: the girls brother, who was 15 at the time the girls vanished, became a homicide detective when a homicide detective grew up.