Christa Pike, 50, was sentenced to death for the horrific murder of Colleen Slemmer in 1995 Christa Pike, 50, remains in a critical condition in hospital after surviving an attempted execution in Tennessee involving two doses of pentobarbital Key points and original sources are listed below.

• Christa Pike, 50, was sentenced to death for the horrific murder of Colleen Slemmer in 1995S1

• Christa Pike, 50, remains in a critical condition in hospital after surviving an attempted execution in Tennessee involving two doses of pentobarbitalS2