Christa Pike's failed execution exposes the secretive market for lethal injection drugs

Tennessee officials are still investigating why death row inmate Christa Pike survived an execution attempt after receiving two doses of pentobarbital, a drug intended to render a person unconscious and ultimately cause death.While the immediate focus has been on what went wrong inside the execution chamber, experts say Pike’s case has also renewed scrutiny of a problem that has been building for more than a decade: how states obtain lethal injection drugs after pharmaceutical companies mo