Probably the guest house is also a key element. Its location, the people who run it, and the atmosphere there. It could be a spooky old guest house or a cozy little place. And whatever interactions the man has with the environment and the people in the guest house are likely key elements too. For example, if he has a conversation with an old caretaker that gives him some crucial advice, that would be a key part of the story.
Well, without knowing the exact story, a key element might be the man himself. His identity, his reasons for being in the guest house could be important.
Since I don't have detailed information about this 'the man in the guest house true story', it might be a story about a man who had a special experience in a guest house. Maybe he met some interesting people, or there were some unexpected happenings like a hidden treasure or a long - lost secret being revealed in that guest house.
The key element is the interruption of the wedding guest's journey to the wedding by the ancient mariner. Another is the mariner's tale which includes the fateful shooting of the albatross. Also, the supernatural events on the ship like the strange apparitions and the curse that befell the crew are important elements.
Assuming 'House of Chains' is a true story, the key elements could be complex. The house might be a character in itself, with its architecture and layout playing a role in the events. For example, hidden rooms or passages could be part of the mystery. The 'chains' could symbolize a cycle of behavior or a series of obligations within the family. There could be external factors like economic hardships or social upheavals that affected the family in the house. And the relationships between family members, such as love, hatred, or envy, would be crucial elements that formed the chain of events in the story.
Strange noises are a key element. They could be loud bangs or whispers that seem to come from nowhere. Another element is the movement of objects without any human interference.
One key element could be the sense of imprisonment. In the true story, someone or a group might have been physically or mentally restricted. Another element is the struggle for freedom. They had to fight against whatever was holding them back.
One key element is the location, which was his house at 8213. Another is the fact that he targeted young men and boys. Also, the discovery of the bodies on his property was crucial.
As I don't know the exact story, one possible key element could be the location of the house. If it was in an isolated area, that could contribute to the sense of mystery.
There are a few key elements. First, the family moving into the new house is important as it sets the stage. Then, of course, the letters from 'The Watcher' which were full of creepy details about the family and the house. Also, the family's reaction to these letters, their growing fear and paranoia, is a key part of the story.
The key elements include the affair between Adrian and Laura. Their accident where they hit the young man is crucial. Then, their attempts to cover up the crime are important. Also, Laura's guilt which led to her being killed by Adrian. And, of course, the parents' elaborate plan to create the 'invisible guest' situation to get revenge for their son.
The key elements could include the guest themselves, their characteristics, and their purpose for being there. Also, the setting where the story takes place is important.