NORTH BAY -- style="margin: 0cm 0cm 11.25pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; vertical-align: baseline;"> Ontario Provincial Police are hoping a newly released video will bring in new tips in a historical missing persons case from northern Ontario that remains unsolved.

The video is a behind-the-scenes look at the investigation into the disappearance of New Liskeard teen, Melanie Ethier.

Police say 15-year-old Melanie was out shopping with friends then went to watch a movie at a friend's home the day before she disappeared.

Authorities say she left the friend's home at about 1:30 a.m. on Sept. 29, 1996.

She was last seen walking home on a bridge in New Liskeard.

OPP investigators say there was "no crime scene" they could work with.

They are hoping that the new video can help them solve the case.

Anyone with any information is encouraged to call OPP or Crime Stoppers.