@serenesurface-- Police officers and detectives solve crimes. Criminal intelligence analysts do not. They collect information about who is committing crimes, where and why. They look for trends and patterns and brainstorm ways of reducing crime.
You can think of a crime investigator role as a response to crime, where the aim is to catch the criminals and make sure they are punished for their crimes. The role of a criminal intelligence analyst is to predict crimes by assessing the intelligence information they have. This way, they aim to prevent the crimes from taking place in the first place.