What does the "linkage triangle" in an investigation depict?

The "linkage triangle" is a critical concept in investigations that illustrates the relationships among three key elements: the evidence, the crime scene, and the suspect. This model helps investigators understand how these elements are interconnected and can provide valuable information about the circumstances surrounding the crime.

By studying the evidence found at the crime scene, investigators can establish links to potential suspects. The evidence may include physical objects, biological samples, or digital data, which can indicate a suspect's presence or involvement in the crime. Understanding this triangle is vital for constructing a coherent narrative of the crime and identifying the perpetrator.

The other options do touch on relevant aspects of investigations, but they do not encapsulate the primary focus of the linkage triangle. The relationship between the victim, suspect, and investigator, for instance, while important, does not specifically address how these foundational elements interact through evidence and the crime scene. Similarly, the interactions between the crime scene and witnesses or the connections between forensic evidence and legal outcomes provide valuable insights, but they do not define the essence of the linkage triangle as it pertains to direct relationships crucial for solving a crime.