The ISBN of Dark Demon is 0-515-14088-0.
The ISBN of Running with the Demon is 0-345-37962-4.
The ISBN of Lord Demon is 0-380-97333-2.
The ISBN of The Demon Awakens is 0-345-39149-7.
The ISBN of The Demon Spirit is 0-345-39152-7.
The ISBN of The Demon Apostle is 0-345-39153-5.
The ISBN of A Demon Of Our Own Design is 978-0-471-22727-4.
The ISBN of When It Was Dark is 978-1437364293.
Dark Demon was created in 2006.
The ISBN of In the Winter Dark is 0869140450.
The ISBN of Hunter in the Dark is 1550050567.
The ISBN of A Dark Victory is 1862914060.
The ISBN of A Dark Winter is 1862913684.