Forensics
Forensic astronomy: "Well, firstly the moon on that day was in the first quarter. Secondly at the precise time of the murder it was riding "low" on the horizon, and was about to set. There would not have been enough light for Allen to identify Armstrong or anyone else. The jury agreed, and Duff Armstrong was acquitted!"

Forensic accountant: "For [Al Vondra,] it was his awakening to just how serious the consequences of his sort of accounting work could be. After all, people don't normally try to kill you for doing their taxes. But as a forensic accountant, it's Vondra's job to see past the squeaky-clean financials corrupt companies present to their investors and find out what is really going on."

Computer forensics: "Under pending legislation in South Carolina, digital forensic evidence gathered for use in a court in that state must be collected by a person with a PI license or through a PI licensed agency. ... 'Under the South Carolina statute, only a handful of licensed PIs across that state have the years of information system and tools experience needed to do true digital forensics with repeatable processes of documentation and chain of custody. This is the only group that stands to gain.'"