The Seven Dials Mystery has 282 pages.
The Listerdale Mystery has 256 pages.
The Solitaire Mystery has 351 pages.
The Mystery Play has 76 pages.
A Caribbean Mystery has 256 pages.
The Regatta Mystery has 229 pages.
An Excellent Mystery has 192 pages.
The Bungalow Mystery has 210 pages.
The Sittaford Mystery has 308 pages.
The Mystery of the Flying Express has 192 pages.
The Mystery of the Spiral Bridge has 177 pages.
The Wailing Siren Mystery has 192 pages.
The Mystery of the Aztec Warrior has 178 pages.