Some cases involve brutal murders of teenagers, a mysterious death involving a New Jersey Transit train, and several people who have just seemingly vanished.
More and more people believe it's necessary for the authorities to reopen the case of Tiffany Valiante who got his by a train in Mays Landing, Atlantic County.
The death of Tiffany Valiante, the Mays Landing girl who was hit by a NJ Transit train in 2015, is the focus of the first episode of Netflix's third season of "Unsolved Mysteries".