And Detective Inspector Stephen McGrath is confident of finding answers for Marion’s family after 38 years.
It was July 1984 when the mother-of-two from Balgray disappeared and was reported missing to police.
There were no further sightings of her and her body was never found, but she was declared legally dead by the Court of Session in Edinburgh eight years later.
The case was reopened in 2005 but shelved a year later without a resolution.
However, DI McGrath, from the Unresolved Homicide Investigation Team, is now back on it. During a visit to Lockerbie earlier today, he said: “We are approaching this with an open mind and not discounting anything at this time.
“We’ll carry out a professional and thorough investigation no matter how long it takes. We are determined to get to the bottom of this and exactly what happened to Marion. It will take as long as it takes for us to get those answers the family deserve.
“I am confident that we will get the answers that we need to solve her disappearance.”
He appealed for anyone with information on the case, no matter how small, to contact police.
* Full story in this week’s paper