There are two books with this title.
Touching Darkness is by Scott Westerfeld. The paperback has 336 pages.Touching Darkness (The Offspring) is by Jaime Rush. It has 400 pages.
She Is the Darkness has 470 pages.
Touching from a Distance has 208 pages.
A Darkness at Sethanon has 425 pages.
Swallowing Darkness has 384 pages.
The Wheel of Darkness has 400 pages.
The Lake of Darkness has 201 pages.
Dwellers in Darkness has 203 pages.
A Handful of Darkness has 224 pages.
Fear the Darkness has 256 pages.
Boy in Darkness has 114 pages.
Stalking Darkness has 512 pages.
Lords of Darkness has 192 pages.