Dennis Flanagan

A pickpocket dies of anthrax poisoning, putting Holmes and Watson on the trail of the toxin's source in order to prevent more deaths.

As the months-long investigation into the serial killer reaches its close, Voight must outsmart the offender in a race against the clock.

Tasked with shadowing a crisis prevention team, Upton finds her approach to policing at odds with the team's mental health clinician. The case brings out Upton's personal struggles, Voight stands by her.

A young woman visiting from Buffalo claims that her car was stolen outside a Manhattan convenience store with her baby still buckled in the backseat. Benson (Mariska Hargitay) and Amaro (Danny Pino) get as much information as they can from the anxious mother and her boyfriend at the police station, while Fin (Ice-T) and Rollins (Kelli Giddish) track their path from Buffalo for clues. When the parents' stories don't add up, the detectives must uncover what really happened to the missing baby, and the truth surprises everyone. Also starring Dann Florek (Captain Donald Cragen). Special appearances by Diane Neal (ADA Casey Novak) and Tamara Tunie (M.E. Melinda Warner).

Intelligence chases down a lead in the ongoing serial killer investigation as news of the case reaches the public.