S1·E20 Remote Control

A man escapes from the Seneca Institute and is run over — Digger recognizes him as his blood brother Jay Dougan and John can see Dougan's picture in color. The two of them travel to Northam where the color leaves the dead man as John watches and the body has teeth with no enamel and a tag-id on his tongue. The two of them find the man's Army medal in the woods and follow it back to the Institute where mental patients are kept, but there's no evidence Dugan was ever there. They sneak in and John witnesses patients being drugged to act as "remote viewers", seeing things psionically from a distance.

John sees one blind patient, Michael, in color and playing "My Funny Valentine" and gets him out — he has scrambled senses and says he was told he was suffering from a fatal brain disease (similar to John's history — see "The Mourner".) and they took him in and help him develop his gift to see at a distance along with other orphans and homeless people. They realize they're being watched by Sam...