Medical second opinions claim to lower healthcare costs, improve patient outcomes and democratise access to the highest level of care. Patients and payers increasingly agree. One provider told us the industry is growing exponentially and has only just begun to exploit its potential in America. Recent studies suggest up to 40% of initial diagnoses are incorrect pointing to a huge untapped market trading on uncertainty and expertise. Who is taking the lead and how much time does the medical elite have for the unwashed masses?