Some psychopath posing as a taxi driver kidnapped a married couple, immediately killing the man and burying him near the railroad tracks. Patrol officer Amelia Donaghy, who arrived at the scene of the crime, quickly got her bearings and preserved all the evidence, which is why paralyzed detective Link Rhyme, whom the police turn to for help, takes her on as his assistant. The quick-witted girl will become his eyes in this difficult case.