Enderby's Dark Lady, or No End to Enderby

Blurb

Enderby's Dark Lady, or, No End to Enderby is a 1984 novel by Anthony Burgess, the final volume in the Enderby series. It was first published in the United Kingdom by Hutchinson.
The protagonist was killed off in the third book, The Clockwork Testament, or Enderby's End, but Burgess later considered this a mistake and brought the character back for one more book.