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Radon radiation

Investigators: Radon Radiation

Many know of someone who died of lung cancer but never smoked, and it seems to be a more common diagnosis each year. What's behind it? Though second-hand smoke is certainly a culprit, the second leading cause of lung cancer after smoking is something that may be lurking in your own home.

Jamie Gunn's home is quiet and cozy, and it looks like any other house in the cul-de-sac -- but her home was invaded by something sinister that slipped into the basement, unseen or unheard. The killer worked slowly and methodically. When it finally struck, it extinguished a radiant mother of two.

Jamie's mother died of lung cancer even though she never smoked a cigarette in her life. Barbara Neitge, 54 suffered and died from the disease. Now, the cause is being traced right back to her home.