This is a quite simple try to solve the puzzle from the cryptoanalysis book from the "The Beast Inside" game.
# python solve.py
N R DKKLAJ HOOPEN
A Z TUFSMJOH STERLING
W Z HGXBO KJAER
K Y ZQDUVMZM NERIJANA
O S GQPHAOW KUTLESA
L P NQPDE RUTHI
S X EHXXMZZ JMCCREE
J T FUFFUH PEPPER
V O ZVVAFZOLLW SOOTYSHEEP
C O QVIFQVWZZ CHURCHILL
H J FCJBCLFCPX HELDENHERZ
F R XSOBBSHHS JEANNETTE
Q P QBSBCPMJT PARABOLIS
N Q TLICMOBAXQLO WOLFPREDATOR
E C VJGFKDDWM THEDIBBUK
W A ZQJCAKJIWOPAN DUNGEONMASTER
G B XHZRGFLGJSOFRNS SCUMBAGBENJAMIN