Forensics: Cross exam of a crime lab DNA tech gets high marks for drama

This case has some excellent insight into how a defense attorney finds a crack in a lab tech’s QA protocols [ she spit on a DNA sample] and then tries to blow up all the other work-product used by the Prosecution.

The evidence of interest is a single bullet with arguable DNA recovered from the scene 4 months AFTER the crime. Ooops.

The def attorney also uses a phone message from a cop to the crime lab gal.

From the news article: “The message, Buting [the defense attorney]  pointed out, asked Culhane [the lab tech] to test evidence “to try to put” Halbach [the homicide victim]  in Avery’s [the bad guy] trailer or garage.”  Ooops.

http://www.jsonline.com/news/crime/dna-experts-record-ripped-b99643010z1-363819471.html

About csidds

Dr. Michael Bowers is a long time forensic consultant in the US and international court systems.
This entry was posted in AAFS and tagged , , , , . Bookmark the permalink.

One Response to Forensics: Cross exam of a crime lab DNA tech gets high marks for drama

  1. This comes from the “Making a Murderer” series on Netflix – 10 hours of gut wrenching horror. In this part of the series, the Lab Analyst on the stand almost tears up as the Defense Attorney rips her a new one. IMO, she should have been arrested for destruction of evidence.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s