Frontline examines both sides of the debate over vaccines. On one side, the public health community wholeheartedly endorses them. One the other, parents and politicians accuse them of causing disorders like autism.
Frontline investigates the case of Todd Willingham a Texas man who was executed in 2004 for the fiery deaths of his three daughters. Although he is accused of arson, a forensic scientist discovers that that there is evidence that the fire may have been accidental.