Mariella Lennie, a 17-year-old girl from Tulita in the Northwest Territories, became the subject of a tragic and unsolved case that has lingered in the minds of residents for decades. On October 6, 1991, Mariella was last seen alive outside the Discovery Inn in Yellowknife. This moment marked the beginning of a mystery that remains unsolved to this day.

Mariella's disappearance sparked an immediate concern. The fact that she was last seen in a public area like the Discovery Inn added a layer of complexity to the case. The inn, a common gathering place, could have been frequented by numerous individuals that night, making it difficult for investigators to narrow down potential suspects or witnesses.

The search for Mariella continued through the harsh winter. Then, in a grim turn of events, her body was discovered the following spring, floating by a dock near Con Mine. This location, known for its industrial activities, was an unexpected place to find a young girl, raising numerous questions about the circumstances leading to her death.

The discovery of her body near Con Mine opened up a range of investigative possibilities. The mine, with its workforce and transient nature, might have provided crucial clues or witnesses to Mariella's last movements. However, the delay in finding her body due to the winter conditions complicated the investigation. Key evidence might have been lost or degraded over the months, making it challenging to piece together what happened to Mariella after she was last seen.