Who is csi based on

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Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:. Having a dedicated evidence collection unit has a number of advantages, not the least of which is team members know the procedures for handling, storing, and documenting evidence so that it is not damaged, contaminated, or lost. Blood stains, fibers, bullet casings, fingerprints, tire tracks, and footprints are all collected in vastly different ways.

Having a lab technician who is used to working with blood samples try to make a cast of tire tracks in mud could be disastrous, and having extraneous people at a crime scene can damage or contaminate evidence. This is also why crime scenes are closed to all but the necessary personnel, and the lab technicians generally remain in the lab.

Furthermore, the lab technicians are likely to be specialized; the person doing firearm analysis is probably not also running DNA tests or comparing fingerprints. Tests are much more likely to be performed by separate departments, such as ballistics, trace analysis, fingerprint analysis, toxicology, entomology, and blood spatter analysis. Crime Scene Investigators are usually civilians, rather than law enforcement.

The job of the crime lab is to determine facts based on evidence. Knowing, for instance, that the suspect is an ex-criminal or that the police believe they know what a substance is might make a technician less likely to be objective with the results. Sara Sidle questions a witness.

This is what happened in a Massachusetts crime lab, where chemist Annie Dookhan was accused of identifying samples based on what they were suspected to be, rather than running tests to determine what they were, and even of adding cocaine and heroin to samples so that they would test positive.

Dookhan was sentenced to three to five years in prison, and many of the drug cases she was a lab technician for are likely to be thrown out, as any samples she could have tampered with cannot be retested. So far, of the 34, cases she worked on over the 8 year period, more than have been dismissed.

According to the Las Vegas Review Journal , in there were homicides alone in Las Vegas, which would leave hundreds of unsolved crimes a year. Which brings us to the next major point of contention: the technology.

While many of the instruments used and tests performed on samples are real, their uses and results are often overly simplified. Petersen left CSI in Season 9. Fox departed as a series regular in Season 8. She remained a recurring guest star for the next four seasons, rejoining the cast as a series regular at the start of Season Langham joined CSI as a recurring in Season 3 and was promoted to series regular in Season 8 for the remainder of its run.

They are now joined by a fifth with CSI: Vegas. CSI: Crime Scene Investigation was the most watched drama series in the world for seven years between and Subscribe to Deadline Breaking News Alerts and keep your inbox happy.