​Thousands of people are reported missing in Scotland every year, and while most are traced within 48 hours, some remain a mystery years on.

For months, years and decades these people remain lost without a trace, with circumstances surrounding missing persons cases often remaining unclear.

Police Scotland currently hosts details of 35 cases of missing people on its website.

Here, we look at nine cases of missing people from Glasgow and the surrounding areas.

For more information about Missing People in Scotland, visit the Police Scotland website.

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Mary Duncan

​Mary Duncan's disappearance has been investigated for more than 40 years.

The "quiet, happy" 17-year-old Mary left from her family home in Bonhill, West Dunbartonshire, in March 1976 to go visit a friend.

But the young mum failed to return home, and despite extensive searches her whereabouts remain unknown.

Evening Times: Mary Duncan vanished in 1976 Mary Duncan vanished in 1976

And while her case remains a missing persons probe, detectives say they cannot rule out the possibility that Mary has come to harm.

In April, police began a search of the home of Mary's stepfather, convicted paedophile Norman Duncan.

But officers would not confirm the exact address of the search.

For more on Mary Duncan, visit Police Scotland here.

Sandy Davidson 

​Three-year-old Sandy Davidson's disappearance has baffled police for more than four decades.

On April 23, 1976, the toddler was playing in the garden of his grandmother’s house in Irvine, along with his sister Donna, 2, and the family dog.

It's thought little Sandy followed the dog as it escaped from the garden, but he never returned.

Evening Times: Missing Sandy Davidson, and what police think he may look like nowMissing Sandy Davidson, and what police think he may look like now

Despite numerous appeals and a major search operation at the time, Sandy's case has never been solved.

Yesterday we told how Italian side Roma FC shared an appeal for Sandy while singing a new player.

The club used the media interest around signing new players to showcase missing children from across the globe.

For more information on Sandy’s disappearance, visit here.

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Thanh Van Bui

Thanh Van Bui was just 15-years-old when he disappeared from Glasgow on an England-bound train.

Despite extensive searches following going missing in June 12, 2015, police are yet to find the teen from Pollokshields.

Evening Times: Thanh Van Bui was last seen at central station in 2015Thanh Van Bui was last seen at central station in 2015

Footage released by police show the youngster chatting to a man and woman before boarding a train at Central Station on the day he went missing.

Visit here for more information on Thanh’s disappearance.

Paul Booth

Paul Booth from Cumbernauld has not been seen since October 25, 2016.

The disappearance of the then 45-year-old was described as “out of character” by investigating police.

Evening Times: Paul Booth has not been seen since 2016Paul Booth has not been seen since 2016

He was last seen on a footbridge between McGregor Road and Hillcrest Court

More information on Paul Booth’s disappearance can be seen here.

Paul Harley

The whereabouts of Paul Harley has remained a mystery for almost five years.

The 53-year-old vanished from his home in Whiteford Avenue in Dumbarton on September 28, 2014.

Evening Times: Paul Harley vanished in September 2014Paul Harley vanished in September 2014

Police launched a re-appeal for information two years later, speaking of how Paul’s family have experienced a “very distressing time” and remain “extremely concerned” for him.

Visit herefor more information on Paul Harley’s missing person’s case.

David Findlay

Keen walker David Findlay vanished from Sauchiehall Street on May 5, 2008.

In the decade since his disappearance, police have been unable to trace the missing grandfather.

Evening Times: Grandfather David Findlay vanished from Sauchiehall Street in 2008 Grandfather David Findlay vanished from Sauchiehall Street in 2008

A number of unconfirmed sightings of the Cardonald man were alerted to police following his disappearance, including in Coatbridge, Cumbernauld and Kilsyth – but his whereabouts remain unknown.

Police Scotland’s information page on David Findlay can be seen here.

Stuart Clark

The whereabouts of Stuart Clark has been unknown since January 17, 2016.

Police have issued CCTV of the 59-year-old man, who was last seen on a train between Cardross and Dalmuir.

Evening Times: It's been over three years since Stuart Clarke was seenIt's been over three years since Stuart Clarke was seen

It’s believed he may have been in Mac’s Bar on Dumbarton Road the following day, however this has not been confirmed.

More information on missing Stuart Clark can be found here.

Alan Jeffrey

Alan Jeffrey was in Tenerife with his girlfriend in June 2018.

He was due to return home, but instead opted to continue on the trip with friends.

His girlfriend returned home herself, but since then Alan has had no contact with family.

Evening Times: Alan Jeffrey has not returned from Spain since June 2018Alan Jeffrey has not returned from Spain since June 2018

Police have since been liaising with Spanish authorities and Europol as part of their inquiry.

Officers also cannot rule out that Alan “may have come to harm”, adding that it is “very unusual” for him not to get in touch with relatives.

Visit here for more information on missing Alan Jeffrey.

Tom Graham

Tom Graham vanished from Toryglen in Glasgow on October 27, 2018.

The 30-year-old, from Linkwood Crescent, has been deemed a “high-risk” missing person from officers.

Evening Times: 'High-risk' missing person Tom Graham'High-risk' missing person Tom Graham

He has the name “Sophie” tattooed on the right side of his neck, and a tattoo of a knife on his lower right arm. He also has a tattoo of a black panther on his calf.

A Police Scotland missing person’s page website on Tom Graham can be found here.