Fringe/Recap/S02 E07

Season 2, Episode 7:

Of Human Action
When the kidnappers of a young boy display powerful mind control abilities -- forcing people to harm themselves and others -- the Fringe team investigates. However, it transpires that it's the boy, the son of a Massive Dynamic employee, who possesses the ability: he is controlling his "kidnappers" and killing anyone who tries to stop his spree.