Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Oklahoma State Bureau of Investigation (OSBI) is an independent state law enforcement agency of the government of Oklahoma. The OSBI assists the city police departments of the state and is the primary investigative agency of the state government. OSBI works in conjunction with the Oklahoma Department of Public Safety to enforce the criminal laws of the state. The OSBI is governed by a seven-member commission, with each member of the commission appointed by the Governor of Oklahoma. The commission then appoints a director, who serves at the pleasure of the commission, to serve at the chief executive officer of the OSBI. The current director is A. DeWade Langley, who was appointed by the commission in 1995.