Adrian Ferris
Secretary of the Medical Affairs Board, which holds Dr. Huston's patient records, including those of Roger Carlyle.
Prof. Anthony Cowles
From the University of Sydney, currently a Fellow at Miskatonic University in Arkham. He has seen amazing photos of ancient ruins in the west of Australia, which were taken by Arthur MacWhirr.
Art Mills
Harlem jazz trumpeter. Former friend and investigative partner of Hilton Adams.
Arthur Emerson
An innocent New Yorker. As an importer/exporter, he was able to supply the address of the Ju-Ju House, which Jackson had intended to visit, as well as the name of a certain Ahja Singh, who seems supplies the Ju-Ju House's goods?
George Brunton
Subwarden of the Death House at Sing Sing prison, where Hilton Adams is awaiting execution.
Hilton Adams
Innocent man framed by the Cult of the Bloody Tongue for its murderous spree.
Jackson Elias
A globetrotting writer specializing in exposes of death cults and other strange organizations. He gets wind of some mysterious scheme, but cultists chase him down and kill him.
Jonah Kensington
Owner and chief editor for Prospero House, a small publishing firm that has released Jackson Elias' books.
Martin Poole
NYPD investigator of Jackson Elias' murder. Knows that in the last two years, eight other people have been killed in a manner similar to Elias' death.
Mickey Mahoney
Friend of Jackson Elias and publisher of a scurrilous tabloid, [i]The Scoop[/i].
First released over 30 years ago in 1984, Masks of Nyarlathotep was among the first epic campaigns for Call of Cthulhu, and is now considered a classic of the roleplaying genre.