at we know:

After the state administered two doses of pentobarbital, witnesses said 50-year-old Pike was still alive and snoring.

Pike was taken to a hospital, where she was on a ventilator and unconscious in the following hours, according to her attorneys.

Pike's attorneys said they believe problems with the IV lines caused the pentobarbital to flow into her body instead of her bloodstream.

 Apparently at no point did any member of the execution team realize that the IV lines were not correctly placed or that the veins had blown and that the pentobarbital was, in whole or in part, entering Ms. Pike's body,  they wrote in court documents.

Big picture view:

The stunning failure has left both sides of the death penalty debate demanding answers. Lee called it  deeply disturbing  and called for an independent investigation.

What's next for Christa Pike?

What's next:

As of Friday, Pike was in critical condition and hospital staff were still working to save Pike's life.

What we don't know:

It's unclear whether the state will attempt to execute her again. Tennessee's execution protocol doesn't spell out what happens if the person is alive after a second dose of lethal drugs.