The Mark on the Door has 192 pages.
The Door Below has 333 pages.
The Door to December has 528 pages.
The Mark of the Crown has 144 pages.
According to Mark has 208 pages.
"Orphan at My Door" by Jean Little has 176 pages.
The hardcover of "Mark of Athena" is 586 pages. The paperback is 574 pages.
Three at Wolfe's Door has 186 pages.
The Door Through Space has 132 pages.
Door Wide Open has 182 pages.
310 Pages.
Mark of the Lion Series has 520 pages.
One Door Away from Heaven has 720 pages.