The DVD set is, The Unexplained Box Set.
The Unexplained is a paranormal-themed documentary series that first aired in 1996. There were multiple episodes but for some reason the box set only contains four episodes. Three of the four episodes, The Vampire Myth, Poltergeist, and Spontaneous Human Combustion, are good. The other episode, Extreme Sacrifice, is perhaps the worst episode of the series and doesn't fit the theme of the series. For some unknown reason several other good episodes such as, Alien Abductions, UFOs Vs. The Government, and Haunted Houses, were not included. It's a shame that they were not.
I loved this series and remember watching the episodes many times throughout the 90s and early 2000s. I would love to own all the episodes and since only four were released in the box set I'm not quite satisfied.
On a scale of 1 to 10, with one being the lowest and 10 being the highest, I give this a 5. If the remainder of the episodes were included I would definitely give it a 10.