From Reason:
TV shows like CSI, Law & Order, and NCIS depict incredible technology for identifying criminals.
In one NCIS scene, a 3D hologram identifies a person’s teeth, precisely matching the killer’s bite to a bite mark on a victim. “A little 3D magic for clarity and I give you—the killer’s incisors!” NCIS character “Abby” announces proudly.
John Stossel loves crazy Abby, but notes that in the real world, court-approved experts reach similar conclusions—without good science to back them up.