A new appeal has been made on the BBC's Crimewatch programme to help trace a missing Kent nurse.
Miss Kerton was last seen at Aachen railway station in July 2001
Louise Kerton, 24, from Broadstairs, disappeared while in Germany and has not been seen since 30 July, 2001.
Crimewatch showed a reconstruction of Miss Kerton's last movements filmed by a German equivalent of the show.
Miss Kerton was last seen at a railway station in the city of Aachen.
Train to Belgium
The nurse, who had visited her fiancÚ Peter Simon's mother in the village of Strassfeld near Bonn, was due to catch a train to Belgium and then back to the UK.
Sophie Woodforde, of the National Missing Persons Helpline, said the appeal in Germany, broadcast last December, had not produced much information.
She said: "We would like to hear from anyone who perhaps saw Louise on this route.
"Did she really get the train and what happened to her along that route?"
She said Miss Kerton's family had received a letter from her around that time but doubted its authenticity.
"She doesn't mention that she's coming home and they feel that perhaps the letter was written under duress," Ms Woodforde said.
"They don't feel it was the way she would normally communicate with them."
The Crimewatch appeal was made as part of a UK-wide missing persons awareness month.
A spokesman for Kent Police said on Thursday it was too early to know if the programme had yielded valuable results.
He said: "Everything is looked at but it's difficult to say from the outset.
"Has there been a dramatic new development? No - but there's inevitably a lot of research to do into the information that comes in and that work is still going on."