Tennessee's bungled attempt to execute Christa Pike was not the first time a state has failed to carry out a lethal injection over problems in the death chamber.
Pike, 50, has regained consciousness and is speaking a week after Tennessee gave her two lethal doses of pentobarbital. Outgoing Republican Gov. Bill Lee has ordered a review into what went wrong and the state has not said whether they will again try executing her, which experts say could wade into uncharted legal waters.
