They Used Dark Forces has 511 pages.
Dark Forces - book - has 551 pages.
When It Was Dark has 412 pages.
Reading in the Dark has 220 pages.
In the Winter Dark has 132 pages.
Dark Watch has 357 pages.
The Dark Griffin has 528 pages.
Dark Challenge has 368 pages.
The Dark Goddess has 423 pages.
The Dark Half has 431 pages.
Dark is the Moon has 704 pages.
Dark Apprentice has 354 pages.
Arrows in the Dark has 684 pages.