"The Dark Side of a Pill" is an exclusive, case-driven investigation into one of the medical success stories of our time. One out of every ten adults in the Western world is on antidepressants. With global sales of approximately 20 billion dollars, the prescription drug is one of the most lucrative products of the pharmaceutical industry. But the wonder drug has a dark side. If antidepressants are sold as a tool to create peace and tranquility in the brains of troubled patients, is it possible that the same pill can send someone to the darkest regions of the soul?