After eight people are fatally poisoned at a deli in New York City, special agents Maggie Bell and OA Zidan trace the crime to an unlikely culprit and conduct a…

Liz and the Task Force investigate an infamous assassin who has a long history of weaponizing diseases, but has now turned to even more insidious activities. Meanwhile, Red and Dembe…

In the series 400th episode, a teenaged boy uses a rifle to stop an assault on his mother, but soon learns the target was someone he knows.