When a gunman shoots seven dead at a Washington DC train station, the FBI calls upon a forensic document analyst to find the killer through their only piece of evidence: a ransom note promising to strike again in 24 hours unless $20 million is paid.
When a gunman shoots seven dead at a Washington DC train station, the FBI calls upon a forensic document analyst to find the killer through their only piece of evidence: a ransom note promising to strike again in 24 hours unless $20 million is paid.
