Undercover video shot by the informant at the center of an explosive East Bay drug case. The video shows a well-known private investigator and the commander of Contra Costa County's Narcotics Task Force allegedly handling drugs for a dirty and illegal deal. Tonight, the key scene that's been called the "smoking gun" in the case. Here is NBC Bay Area's Jodi Hernandez.
Undercover Video: Alleged Drug Deal Involving Cop, P.I.