An investigator should ask three questions at the start of the investigation: (1) what did the guilty person have to know or possess to commit this crime, (2) what did the guilty person do to commit this crime, and (3)

Why was the crime committed the way it was and at the time it was

Explanation:

At the start of an investigation, the investigator should ask these three questions;

(1) what did the guilty person have to know or possess to commit this crime, (2) what did the guilty person do to commit this crime, and

(3) Why was the crime committed the way it was and at the time it was

answering these questions will most likely lead to a successful investigation.