'Person of Interest' Sneak Peek! Samaritan Launches Attack on Stock Exchange

We’ve got the latest sneak peek of “Person of Interest.” Watch!

In the episode “If-Then-Else,” Samaritan launches a cyberattack on the stock exchange, leaving the team with no choice but to embark on a possible suicide mission in a desperate attempt to stop a global economic catastrophe.

“Person of Interest” airs Tuesdays at 10 PM on CBS.