Cold Blood

Ron Seigel fails a polygraph test during the investigation into the Ramsey case.

Amanda Knox's mother shares her pain about her daughter's new reality.

Bruce Cannon stresses the importance of being focused when processing a scene.

Curt Knox speaks about his personal struggles since his daughter was convicted.

In Cold Blood, go behind the scenes of brutal murders with mind-blowing twists. Find out how a dentist from a sleepy Pennsylvania town ended up lying in a pool of blood, who is behind a series of murders in a college town, how a small town girl ended up dismembered in a lake and more!

Cold Blood combines the thrill of mystery with the visceral experience of true crime drama to provide compelling versions of how a crime may have happened. In this season find out how a 23-year-old Hawaiian tourist's rape and murder reveals a world of drugs and deception or how an 18-year-old runaway is found strangled to death on the side of a San Diego road.

Watch the stories of homicide investigations that revolve around crime scene forensics. Follow the clues through all the twists and turns, and sometimes decades that pass. In the end Cold Blood will always show that justice has been served.

Ron Seigel fails a polygraph test during the investigation into the Ramsey case.

Amanda Knox's mother shares her pain about her daughter's new reality.

Bruce Cannon stresses the importance of being focused when processing a scene.

Curt Knox speaks about his personal struggles since his daughter was convicted.