Well, my career as a neurosurgeon ended prematurely thanks to a car crash, and when Western medicine failed me I traveled to Kathmandu in search of healing, met someone called the Ancient One who taught me to tap into powers previously beyond my imagination, and somehow ended up as the Earth's first line of defense from ancient evils that reside in neighboring dimensions.

[Sorry, David, were you asking about the drugs? Because you asked for Stephen's story.]