An exclusive, case-driven investigation into the one of the medical success stories of our time. Every tenth grown-up 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 medical industry. But the wonder drug has a dark side. Antidepressants are sold as a strong tool to create peace and tranquility in the mind of a troubled brain. But is it possible that the same pill can send someone to the darkest regions of the soul?