The Real CSI

Jose Baez, Casey Anthony's defense attorney, on the "phantom heart-shaped sticker" evidence presented by the prosecution at the sensational murder trial.

Casey Anthony prosecutor Jeff Ashton on presenting the "smell of death" evidence at the sensational murder trial.

Jose Baez, Casey Anthony's defense attorney, on the "smell of death" evidence presented by the prosecution at the sensational murder trial.

Casey Anthony prosecutor Jeff Ashton on presenting the computer search for "chloroform" during the sensational murder trial.

Jose Baez, Casey Anthony's defense attorney, reflects on the not guilty verdict at the end of the murder trial. "I didn't buy it," he says about the evidence. "And neither did the jury."

Casey Anthony prosecutor Jeff Ashton on reflections on the not guilty verdict at the end of the murder trial, and why a lack of cause of death may have ultimately made up the jury's mind.

Jose Baez, Casey Anthony's defense attorney, on the computer search for "chloroform" presented by the prosecution at the sensational murder trial.

Casey Anthony prosecutor Jeff Ashton on presenting the heart-shaped sticker evidence at the sensational murder trial.

The well-known forensic pathologist and spokesman for ACFEI, a large certification organization, discusses the controversy surrounding the company with FRONTLINE. How stringent are ACFEI's forensic credentialing standards?

Can knowing the details of a crime alter the matchmaking process? Yes, says neuroscientist Itiel Dror. It's called cognitive bias, and it can happen to even the most competent expert.

From the courtroom to the living room (thanks to the hit television series CSI), forensic science is king. But how reliable is the science behind forensics? In "The Real CSI" coming April 17, FRONTLINE correspondent Lowell Bergman finds serious flaws in some of the best-known tools of forensic science and wide inconsistencies in how forensic evidence is presented in the courtroom.