Adam uncovers the scary truth behind unreliable methods that are commonly used to build evidence in criminal cases. He explains why polygraph machines are pseudoscientific hokum, demonstrates why your memories cannot be trusted, and exposes the flaws of forensic sciences like fingerprinting, hair strand matches and bite mark analysis - which often send innocent people to jail.

Adam reveals that the term "halitosis" was popularized in a 1920s ad campaign that used cruel ads to make people insecure about their breath, and explains why running water is one of the greatest miracles of the modern age.