A former FBI agent says the Annie McCarrick case should be upgraded to a murder investigation.
This week marks the 29th anniversary of her disappearance from Dublin.
Annie McCarrick is from Long Island in the US and she travelled here to study, living in Sandymount in Dublin with two friends.
On Friday, March 26th, 1993, the 27-year-old left her house to go walking in County Wicklow, and vanished without trace.
Former FBI agent Kenneth Strange is a private investigator in California, and family friend of the McCarricks.
Though she's one of seven women who disappeared in Leinster over a five-year period in the 1990s, it remains a missing person's case.
Kenneth travelled here last September to retrace Annie's final steps, as he looks into the case for her family.
He believes the gardai should upgrade the case to a murder investigation.
Gardai say the investigation into the disappearance of Annie McCarrick remains open and active.