The book "First among Sequels" ends on a cliffhanger. The protagonist, Thursday Next, has to run for her life, to escape an impending fire.
The next book in the series, "One of Our Thursdays is Missing", has her counterpart Thursday5 investigate a crime. Thursday5 eventually finds Thursday Next, seriously wounded.
However, there don't seem to be burns involved. Thursday Next has been the victim of an attempt at her life, in the form of a taxi accident. Thursday Next's wounds are described as:
She had a fractured skull, a broken femur, and eight breaks to her left arm and hand. There were multiple lacerations, a loss of blood, fever and a concussion.
(I believe it also said somewhere that she had part of the taxi's steering column rammed through her in the accident. I haven't been able to find that back though).
So, it would seem that Thursday Nexts accident in "One of Our Thursdays is Missing" is a different one from the fire at the end of "First among Sequels" - where she may actually have escaped.
The book after that, "The Woman who Died a Lot", starts with a Thursday Next who has recovered enough to walk again.
So it seems that the cliffhanger at the end of "First among Sequels" is never quite resolved. Closest thing I can think of, is that the remake of BookWorld at the beginning of "One of Our Thursdays is Missing", also changed recent history. This is never stated in the books though.
It's not like Jasper Fforde to give us a cliffhanger and then not resolve it. At the very least he would make a joke about the structure or nature of stories. He hasn't done so in this case.
So - am I missing something here? Are the two issues the same? Or is there an unresolved cliffhanger?