>> are you freaking crazy? that's your brain. >> reporter: there is no data. you were the first. >> what got me through it is when i did my research on dr. razai. >> dr. razai spent nearly two decades honing a technique called dbs. you may know it as a treatment for parkinson's. but it has also been used for obsessive-compulsive disorder and in clinical trials for depression, but using it to treat addiction with its subtle demands for desire is a hail mary. >> there are several million people every year dying of overdoses, so these individuals were at risk of dying of an overdose. >> reporter: when the day finally came, jared's mother and father were at his side. over the next eight hours, dr.