On this week's Person of Interest…

Reese and Finch try and protect a billionaire with a genius IQ named Logan Pierce who created a social networking site called FriendCzar.

After learning that he is booted from FriendCzar, he plans to work on a new site about relationship compatibility that would cannibalize FriendCzar.

Logan's friend and co-creator who has everything to lose tries to kill him, but he knew all along.

He gives Reese a gift which turns out to have a gps tracker. He wants to know more about Reese and Finch.

Finch takes Bear to play with other dogs.

Flashbacks reveal Nathan Ingram's desire to do more with the machine and save people, especially after the 9/11 attacks. He goes on his own saving mission.