All her life, Heather, a 19-year-old from Rancho Cucamonga, Calif., has seen light and color where others do not. In her childhood drawings, she added rainbows around everything from people to trees to blades of grass.

"I would be drawing auras and colors around people and trees and rocks," Heather said, "and nobody else would."

At a young age, Heather said, she began to notice meaning in the auras that she, alone, saw. Green or gold was good. Muddier colors, like brown, spelled trouble.

"I started seeing colors that weren't healthy ... so I'd be, 'OK, something's not right there,'" Heather said. "I started realizing, 'OK, well, certain colors aren't good. I don't like being around those.'"

Other children and young adults across the United States say they have paranormal encounters, or psychic powers. To get inside the phenomenon, "20/20" recently sought out several supposedly psychic kids and their families.

In Heather's case, her special ability never fazed her mother, Liza, who runs a pet-sitting business and asked that the family's last name and hometown not be used. But it was something very new for Noreen Lowry, a family friend and Liza's client.

A no-nonsense native New Yorker, Lowry was a retired nurse living with her husband, Charles. One day, three years ago, she began to ask Heather more questions about her strange gift of seeing auras.

"I said, 'Well, you know, do I have an aura?'" Lowry recalled. "And she said to me, 'Yeah.' And, I said, 'Well, what color?' And, she said, 'It's kind of gold.'

"And, then, I had asked her what color my husband was, and she said, 'He's brown.' And even her tone of voice, I said, 'What does that mean?' And she said to me, that he's sick ... that he's pretty sick."

Heather had no idea that, a couple days earlier, Charles Lowry had, in fact, been experiencing shortness of breath just from walking his dogs.

For Part I of "20/20's" coverage of self-described psychic kids, CLICK HERE.

Families living in Lilieci reported windows broken, bicycles flying through the air, objects moving on tables and candles blown out when there is no wind.

When they complained they were being hounded by evil spirits to police they were laughed at.

But after officers saw the evidence with their own eyes they filed a report saying that ghosts were to blame.

When the battleship Barham was torpedoed by the Germans in November 1941, with the loss of over 800 lives, the Admiralty delayed announcing the news to maintain morale.

But the secrecy was ended within a few days when medium Helen Duncan told a couple during a séance that their son, a sailor on the ship, had appeared from the spirit world to tell them it had sunk.

In one of the most bizarre acts of the Second World War, Mrs. Duncan was accused of leaking military secrets - and became the last woman jailed as a witch in the UK.

Now campaigners want an official pardon for the Scots-born mother of six, who spent nine months in Holloway Prison, north London.

Helen Duncan had a vision the HMS Barham would be involved in a wartime tragedy

A group of mediums have handed a petition to the Scottish Parliament, calling on it to lobby Home Secretary Jacqui Smith.

Campaigner Roberta Gordon, from Gullane, East Lothian, said: "At the time the country was paranoid about security and the evidence used against her wasn't accurate.