In 1993, 27 years after Margaret Sutton's last Judy Bolton title,
The Whispering Belltower was written by Kate Emburg with Sutton's encouragement. It takes place about eight years after the last Sutton book, and Judy and Peter have three children. It was published in pamphlet form, with a second edition in 1998. This was followed by a limited edition hardback by Amereon in 2006. In 1997,
Linda Joy Singleton completed a book that Sutton had begun several years before. Singleton submitted it to Sutton for revisions and the book carries the names of both authors. Chronologically,
The Talking Snowman takes place during the Christmas season between the events described in volume 3 and volume 4, and is known to collectors as volume 3.5. In 2012, Kate Duvall and Beverly Hatfield wrote
The Strange Likeness. Sutton had created the title and the beginnings of a plot outline for a mystery located in
Panama in 1968. Duvall and Hatfield never saw the outline, however, and the book is original to them. The book was edited by Sutton's youngest daughter, Lindsay Sutton Stroh, and illustrated by another daughter, Marjorie Sutton Eckstein. The book was published as #39. In 2018,
The Mystery on Judy Lane was published, also written by Hatfield, bringing the total books in the series to 42.
Judy Lane takes place between books 13 and 14. ==Titles==