Chapter 216: Founding Forensic Toxicology (4K8)

In the office at Scotland Yard, Arthur leaned back in his chair, twirling a dark brown strand of hair between his fingers, stretching it out inch by inch to examine it in the sunlight.

While the hair might appear unremarkable, to Scotland Yard, it represented a piece of critical evidence.

On Arthur's desk lay an academic paper that he had ordered the head of the Analysis Division of the Criminal Investigation Department at the Greater London Police Department, Chief Superintendent Charles Field, to draft.

The lengthy paper was filled with various case studies, but its conclusion could be summarized simply—it asserted that human hair grows approximately one centimeter per month, so by analyzing different segments of a hair strand, one could conduct a chemical analysis to determine when the victim had ingested a large amount of toxins.