Renegade - Season 1 Episode 20 Vanished

The daughter of Reno's loyal long-time friend Assistant D. A. Wells begins going on a downhill spiral, entering a life of drug addiction. Upon further investigation, Reno and Cheyenne discover there is much more to this family tragedy than originally thought. They soon uncover a rather elaborate scheme involving black market drugs, a touring rock band, and a corrupt band manager who plans to use the girl to leverage Wells into dropping the impending case against her brother, a notorious drug dealer.