Gabriele Haefs has written at least 22 books. Their most popular book is Sofies Welt with 9 saves with an average rating of 4.33⭐.
1991 • 9 Readers • 624 pages • 4.3
#5 of 5 in The Heroes of Olympus
2014 • 7 Readers • 528 pages • 4.5
2011 • 6 Readers • 13 pages • 4.7
2003 • 2 Readers • 187 pages • 2.5
#1 of 3 in Ingrid Barrøy
2013 • 1 Reader • 613 pages
1993 • 1 Reader • 3
1 Reader • 4
1 Reader
#17 of 15 in Camp Half-Blood Chronicles
2023 • 1 Reader • 512 pages
2013 • 448 pages
2000 • 272 pages
2005 • 237 pages
2021 • 352 pages
#5.2, 5.3, 5.4 of 15 in Camp Half-Blood Chronicles
2016 • 208 pages