Ball Four has 371 pages.
The Predators' Ball has 400 pages.
A Dream of John Ball has 300 pages.
Princess of the Midnight Ball has 272 pages.
Four Quartets has 40 pages.
And Four to Go has 190 pages.
The Rule of Four has 384 pages.
Periwinkle at the Full Moon Ball has 30 pages.
The House of the Four Winds has 318 pages.
Four Days in June has 384 pages.
Four Steps to Death has 207 pages.
The Four-Headed Dragon has 180 pages.
The Four False Weapons has 222 pages.