
Host Molly Hermann reveals the lack of science behind some of the most well-known crime scene investigation tools, and tells the stories of the wrongfully convicted who went to prison for years.

The shoe print at the grisly Idaho crime scene seemed to match Charles Fain's shoe when both showed a small nail hole in the sole; based on that physical evidence, he was convicted and sentenced to death.

David Gavitt served almost 27 years in prison before new arson investigation science exonerated him, but countless others remain behind bars; the science behind crime scene investigations moves forward, but legal precedent only looks backward.