For investigators, the answer was complicated.
People often imagine that suspicious individuals behave obviously. In reality, someone can appear completely ordinary while maintaining a private life that few people understand.
The case also demonstrated the importance of paying attention to seemingly insignificant details.
A single observation can sometimes become the missing piece in a much larger puzzle.
As authorities continued their work, residents began reflecting on their own experiences. Some remembered conversations with the man. Others recalled seeing him around the neighborhood. A few admitted that they had never paid much attention to him at all
