To catch a serial killer.
Pamela Colloff took the same 40-hour course that is the sum total of the training many blood spatter experts claim… and it did not inspire confidence in the reliability of this particular forensic “science.”
Despite what “Law & Order: CSI” tells us, blood spatter patterns don’t necessarily hold all the keys to a crime scene.
Why do they volunteer their time in such a grisly enterprise? To bring closure to the families of the dead.