'Making a Murderer' expert testifies in Dooley trial

Viewers of Netflix's "Making a Murderer" may recognize the forensics expert who testified in David Dooley's retrial Friday. Dr. Karl Reich, who fans of the documentary series may recall as a DNA evidence expert from the second season, testified about the amount of DNA sent for testing in the Michelle Mockbee homicide investigation. He said it wasn't enough for confidence.