The unabridged version of A Tale of Two Cities is 293 pages long. Another version is 372 pages long. In another, 443 pages. Of course, this depends on the physical size of the page, font and spacing...
Dr. Manette promises not to interfere with Lucie and Charles Darnay's relationship. Darnay promises not to tell Dr. Manette his true identity until the morning of the wedding.