Greek police have told the Sheffield woman whose son went missing 20 years ago they are to re-open the case.
Kerry Grist, whose son Ben Needham vanished on the holiday island of Kos in 1991 aged 21, said she was given assurances a new search for her son would be launched when she returned to Greece to mark the 20th anniversary.
She said officers from South Yorkshire Police have also travelled to the island.
Kerry, 39, from Ecclesfield, was visiting her parents at a farmhouse they were renovating when Ben vanished.
Kerry said the breakthrough came when she visited Kos for a meeting with the island’s senior prosecutor.
She said: “I have searched for Ben since the first day he went missing and that is the first time I have been in that building.
“I feel at last that someone is going to help me and I trust her. I went home from Greece for the first time feeling that Ben is not forgotten
“I know he is out there, not necessarily in Greece but somewhere in the world.
“There has suddenly been a massive turnaround after being up against the Greek authorities for 20 years.
“Before, I have left the island disappointed, heartbroken by the lack of effort that the Greek police have put in.
“Now there is a different attitude and the case is wide open again.
“I left knowing that something is going to be done and hopefully it will lead to finding Ben.”
She said the Greek authorities spoke to her about ‘current’ lines of investigation,
“The word ‘current’ is significant,” she added.
“I am not building up my hopes because they have been dashed in the past but I am convinced I will find him.”