You could try looking on Hulu. They often have a decent collection of mystery and ghost story content. Another possibility is to search on the official website of the show to see if they offer viewing options or have partnerships with specific platforms for streaming.
You could try looking on specialized channels dedicated to mystery or ghost story shows. Sometimes local TV networks also air such content. Another option is to search on video-on-demand services.
One interesting aspect could be the unique ghostly characters. They might have distinct backstories that add depth to the stories. For example, some ghosts could be from a different era, like Victorian times, and their appearance and behavior would be influenced by that period.
Perhaps the mystery lies in the powers that the ghosts seem to possess. Are they able to interact with the physical world in ways that defy normal understanding? In the 'blake mysteries ghost story', this could be a central mystery. For example, do they move objects, or cause strange noises for a particular reason? It might be related to some unfinished business they have from their past lives.
One characteristic could be mystery. The ghosts are likely to be shrouded in mystery, with their identities and motives not immediately clear. For example, the story might start with just strange events that seem to be caused by a ghost, but it takes a while to figure out who the ghost is and why it's causing trouble.