Overview of a continuing investigation:
A unified approach is best (see SART, infra, II.e.); best is a single interview by trained interviewer with input from TC, CID, VA, SANE; more likely will be several interviews of victim;
Presume that you will interview everyone who knows the victim, offender, or incident, but use common sense; extensive interviews may yield information that hurts your side of the case; will an interview advance your theory, explain behavior, or weaken the case of your opponent? If not, consider directing energy elsewhere.