Anthony Gaskins

In the Season Four finale, Finch and Root race to save The Machine, which has been located by its AI rival, Samaritan. Also, Reese is caught in the middle of the final showdown between rival crime bosses Elias and Dominic.

An unexpected event brings Watson into contact again with Elana March, the crime boss she brought to justice. Also, with Watson distracted, Holmes enlists Detective Bell to join him in a temporary partnership to solve a theft at a local zoo. Series star Lucy Liu directed the episode. Gina Gershon guest stars.

The United States debates enacting a 'render safe' mission to secure nuclear weapons that belong to the Pakistani government before it collapses, while the Murphy Station pursues the terrorist Jibral Disah. (TV-14 L, V)