The most important clues will come from a person's body. The person who broke in left a little of himself behind. In the store,these prints against millions of others. In the store, there is a lot more glass. Then you find sonething else-a hair. You keep this because you know hair contains a person's DNA. Youcan compare this with other people's DNA, too. If you find a match for the fingerpring or the DNA, you will know who was in the storn. Will you find the thief? You now have a lot of information, so it's possible. For a crime scene investigator, it's all in day's work.