In which work by Charles Dickens did he split into five parts labelled as 'staves'?

YoungAtHeart, As “The tale of Two Cities “ is thought to be the best selling single book at 200 million copies in print, that would be a lot of Harkreuzes)?) to track down

When I first read the question I thought it was Dickens himself who was split, a la Voldemort, due to the wording of the question.