Fringe: Season 1, Episode 15

1 - 15: Inner Child

An enigmatic mute child (Spencer List) is found living underground and begins to bond with Olivia when the Fringe Division is brought in to investigate. While the child adapts to his new environment, Olivia and the FBI hunt a bizarre serial killer known as "The Artist" (Jeremy Shamos), who has resurfaced to publicly display his work. The child leads Olivia to breaks in the case, using a strange ability to sense the emotions of the killer. Once the killer has been captured, Olivia arranges for the child to be secretly put in the care of a foster family, rather than turning him over to the CIA as ordered. As the boy is taken to his new home, he sees the Observer (who, like the child, is hairless and enigmatic) on the sidewalk staring at him