Murray Dukes Marsden was last seen in Calgary, Alberta, sometime between the spring of 2010 and the winter of 2021; the exact date of his disappearance is unknown. He was 38 at the time he went missing, described as five feet ten inches tall and about 201 pounds, with long black hair and brown eyes.

Distinctive marks include scars on his left eyebrow, left jaw, forehead and both forearms, visibly missing teeth, a tattoo reading Irene Lily on his left arm, and fingers on his left hand described as flexed. He sometimes used aliases including Murry, Warren James Marsden, Murray Marston and Dukes Murray. The case has produced few public leads and remains unresolved.

If anyone saw Murray in Calgary during the 2010–2021 period or has information about his whereabouts, please come forward.