I'm not sure specifically as I haven't read it. But it might be a novel where a shopping list plays a crucial or mysterious role in the plot, perhaps related to a killer in some way.
Since I don't know the exact content of 'the killer's shopping list novel', I can't really introduce the main plot. However, based on the title, it might involve a killer who has a shopping list that plays an important role in the story. Maybe the items on the list are related to his or her killing activities, or perhaps the list is a clue for someone to catch the killer. But this is just speculation.
Maybe a witness. The witness might accidentally come across the list. For example, if the list was dropped near the place where the witness saw something strange related to the murder, they could pick it up and then it becomes an important piece of evidence.
The significance might be that it could be a clue. It could show what the murderer was planning, like buying items to use in the crime or to cover up the crime. For example, if there are items like gloves on the list, it could mean the murderer didn't want to leave fingerprints.
The 'killer's shopping mall novel' could potentially be about a series of murders that take place in a shopping mall. It could focus on the investigation of these murders, with the detectives having to navigate through the maze - like structure of the mall, dealing with the various people who work there and the shoppers. There could be a complex backstory for the killer, perhaps something in their past related to the mall that drove them to commit these crimes.
I'm afraid I have no idea who wrote 'the killer's shopping mall novel'. It could be an indie author or someone relatively unknown. Maybe it's a new release and not many people are aware of it yet.
Sadly, I have no information regarding the author of 'the killers shopping list novel'. It might be a book that is only popular in certain regions or among a specific group of readers. Without more research or prior knowledge, it's impossible to say who the author is.
Well, without having read the 'the killers shopping list novel', one can only speculate. It might be a thriller where the shopping list is a crucial piece of evidence. The story could follow a detective or an investigator who stumbles upon this shopping list of a killer. Each item on the list could lead to different locations or people associated with the killer. It could also be that the shopping list is written in a code that needs to be broken. The novel might also explore the psychology of the killer through what they choose to put on their shopping list, like whether they buy things for their victims or for their own personal rituals before or after a kill.