Cynthia Riggs has written at least 12 books. Their most popular book is Deadly Nightshade with 5 saves with an average rating of 4⭐.
Series
2 primary booksCozy Case Files is a 2-book series with 2 primary works first released in 2017 with contributions by Ellie Alexander, Donna Andrews, and 16 others.
Series
7 primary books8 released booksMartha's Vineyard Mystery is a 9-book series with 7 primary works first released in 2000 with contributions by Cynthia Riggs, Philip R. Craig, and William G. Tapply.