Tom Sullivan has written at least 6 books. Their most popular book is S. Petersen's Field Guide to Cthulhu Monsters: A Field Observer's Handbook of Preternatural Entities with 3 saves with an average rating of -⭐.
Series
1 primary book2 released booksAuthored 0% of series
Call of Cthulhu RPG is a 33-book series with 1 primary work first released in 1981 with contributions by Sam Johnson, Dave Blewer, and 54 others.