Private investigators looking into the disappearance of Annie McCarrick say they've narrowed it down to just one suspect.
The American tourist was 26 when she was last seen taking a bus to Enniskerry in Co Wicklow in March of 1993.
The team believes she was murdered by a lone serial killer who has kept it secret for more than 27 years.
Her family's lawyer, Michael Griffith, says a tip-off they received this summer has uncovered a crucial link
