In the end, they find that the cell partner did indeed kill the inmate in a jealous rage with a combination lock that was padded in a sock and then she tied her to the bottom of the bus.
The cell partner did indeed kill the inmate in a jealous rage with a combination lock. This combination lock was padded in a sock. They find this. This is in the end. She tied her to the bottom of the bus. This was in the end.