Blood. It runs through everyone's veins, but when it's outside of the body, it can be used to tell a story. Whether it's a splatter, a gush, a pool, or even one small drop, forensic experts can use bloodstain pattern analysis to define the context in which a crime unfolded.

Vice President at Bevel, Gardner & Associates Ross Gardner explains the science behind bloodstain pattern analysis and explains its methodology. Later, he reflects on specific crime scenes that left a lasting impression on him.

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