( There is some gore content in a few paragraphs below, so read it with caution. But considering it's a detective novel, so yeah, be prepared.)
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Nancy lived at home with her parents. Her father, a former factory worker with a disability pension for a job-related injury, operated a small mail-order business from his home. Her mother helped him with the business and also served as a part-time bookkeeper for several neighborhood enterprises. Neither Nancy nor either of her parents had any demonstrable connection to the drug subculture.
What do you think, could Max find some clues from this case?