Orchestra has completed a tracking system for all telekinetic signals, which puts Bo and her friends in imminent danger. Shanning starts a "suicide-mission" to make sure that Bo's signal will be hidden, but ends up in an impasse... Meanwhile Tate and Bo set some ground rules for their new father-daughter-situation.moreless
Holmes and Watson chase the source of a lethal toxin after a pickpocket dies of anthrax poisoning.
When the Machine turns up a deceased individual as a Number, Finch must remember how he came to create the Machine and determine how the apparent error could have occurred.