Well, 'biohazard the chilling true story' could be centered around a series of events where biohazardous materials were mishandled. Maybe it tells of a scientific experiment gone wrong in a lab that led to unexpected and terrifying consequences. It could involve the spread of a deadly pathogen that started to affect the local population, or workers in a particular facility dealing with bio - related substances.
The Memory Keeper's Daughter is a work of fiction. The plot and characters were crafted by the author to tell a compelling tale rather than being based on real events or people.
Well, 'My Sister's Keeper' is a really touching story. It shows how a family is centered around the sick sister Kate. Anna, the younger sister, has been donating things like blood, bone marrow etc. for Kate all her life. But as she grows older, she realizes she has her own life to live. The court case she files against her parents is a major part of the story. It makes everyone think about what is right and wrong in such a difficult situation where a family is torn between saving one child and respecting the rights of another.
The mystery aspect. There are so many unanswered questions in the world of Graveyard Keeper. Who are you really? What are the secrets of the graveyard? This keeps players hooked as they try to uncover the truth.