Here are some of the most popular books written under the Pseudonymous Bosch name:
The Secret Series:
* The Secret of the Hidden Staircase (2007)
* The Secret of the Old Clock (2008)
* The Secret of the Silver Blades (2009)
* The Secret of the Nightingale (2010)
* The Secret of the Red Hand (2011)
* The Secret of the Forgotten Island (2012)
* The Secret of the Magic Key (2013)
* The Secret of the Missing Crown Jewels (2014)
* The Secret of the Whispering Wood (2015)
* The Secret of the Wild Horse (2016)
* The Secret of the Blackbird (2017)
* The Secret of the Black Dagger (2018)
Other books:
* The Mysterious Benedict Society (2007)
* The Mysterious Benedict Society and the Perilous Journey (2008)
* The Mysterious Benedict Society and the Prisoner's Dilemma (2009)
* The Mysterious Benedict Society and the Curious Case of the Vanishing Thin Air (2014)
* The Mysterious Benedict Society and the Guardians of the Lost City (2022)
* The Nameless City (2012)
This list covers the most well-known books by Pseudonymous Bosch. It's important to note that James Ponti also writes under his own name and has published several other books.