Gervase Fen is a 7-book series with 7 primary works first released in 1944 with contributions by Edmund Crispin.
1944 • 9 Readers • 210 pages • 3.3
1945 • 3 Readers • 261 pages • 3
1946 • 9 Readers • 204 pages • 3.8
1947 • 3 Readers • 215 pages • 4
1950 • 2 Readers • 210 pages
1953 • 3 Readers • 158 pages • 3
1979 • 1 Reader • 221 pages • 3