Falsone and Munch team up with Briscoe and Curtis to investigate the murder of a 14-year-old girl. They trace the suspect from New York back to Baltimore.

John Lange (Vincent D'Onofrio) becomes pinned between a subway train and the station platform. The Baltimore homicide department is called to investigate whether a crime has been committed or whether the circumstances Mr. Lange finds himself in is the result of a terrible accident.