Constantin Gillies has written at least 7 books. Their most popular book is Extraleben with 3 saves with an average rating of 3⭐.
Series
3 primary booksAuthored 100% of series
Extraleben is a 3-book series with 3 primary works first released in 2008 with contributions by Constantin Gillies.
Series
1 primary bookAuthored 100% of series
Schröder is a 1-book series first released in 2015 with contributions by Constantin Gillies.