Across the U.S., more than 95,000 people desperately wait for a new organ. This year, fewer than 30,000 will receive one. Each day dozens of people die, waiting. The overwhelming demand has given rise to cutting edge scientific discoveries as well as a global black market in body parts. Explorer takes viewers from American medical centers where medical miracles are being performed every day to the shady world of body brokers and middlemen to unearth the disturbing truth. Where do these ‘spare parts’ come from? How are they trafficked? And how far are people willing to go to get what they so desperately need?