How can investigators identify a criminal when they don't leave DNA?

Dr. Candice Bridge

DNA is the go-to forensic evidence in many criminal cases. What other trace evidence can be used to identify the perpetrator when they don't leave DNA behind?

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The conviction rate for sexual assault crimes is alarmingly low, with only a tiny percentage of reported rapes leading to a conviction.

DNA is the go-to forensic evidence in sexual assault cases, but did you know that in more than 30% of cases, no DNA is left at all? In these types of case, other kinds of evidence need to be found to link the three points in the criminal triangle: victim, suspect and crime scene.

Candice Bridge has dedicated her career to using science to find ways to help the victims of sexual assault get justice. Candice joins us in The Garden explain where we can look for evidence when DNA is not an option.

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50 minutes


Forensics: Evidence, Ethics & Evaluation

About the Fellow

Dr. Candice Bridge

Dr. Candice Bridge is an Associate Professor at the University of Central Florida where she holds a position in the Department of Chemistry and at the National Center for Forensic Science.

Forensics: Evidence, Ethics & Evaluation Collection

This collection looks at crime, from how to solve a criminal investigation with evidence to how we treat offenders with mental health problems, and gives us intriguing insights into the myths and reality of forensic science.