The End of the Road.

Looks at how authorities tracked down and arrested alleged snipers John Allen Muhammad and John Lee Malvo. The killing spree in suburban Maryland, Virginia, and District of Columbia; The history and pathologies of Muhammad and Malvo; How they transformed their car into a killing chamber; Attempts by criminologists to explain the crime in light of past serial killers; Frustrations of Police Chief Charles Moose; Phone calls made by the snipers; Muhammad's .223-caliber Bushmaster assault rifle; Uncertainty of motive.