Solution: Parts is Parts

Written by Eric Berlin

The trigrams (three-letter groups) can be arranged to form a list of monsters (most of them familiar, and all of them findable in the AD&D Monster Manual.) Each monster, however, is missing one letter. The correct order of trigrams is as follows:

z(O)mbie
ce(N)taur
vampir(E)
chimer(A)
e(F)reet
skele(T)on
m(E)dusa
minotau(R)
grif(F)on
wra(I)th
mind (F)layer
(T)roll
s(H)rieker
The missing letters, taken in order, spell ONE AFTER FIFTH. The answer to the puzzle is thus sixth.