This puzzle is made up of 52 words. These words can be paired up such that the words in the pair differ by a single letter. The pairs:
A + GRIME = MIRAGE
B + LURE = RUBLE
C + PROSE = CORPSE
D + PIERS = SPIDER
E + START = TREATS
F + NOTE = OFTEN
G + REALLY = ALLERGY
H + READ = HEARD
I + REALM = MAILER
J + TRITE = JITTER
K + CLEAT = TACKLE
L + TANNER = LANTERN
M + MASTER = STAMMER
N + SCARED = DANCER
O + WELT = TOWEL
P + LETS = SLEPT
Q + THOU = QUOTH
R + THIS = SHIRT
S + CAPE = SPACE
T + NICER = CRETIN
U + PRIME = UMPIRE
V + SNARE = RAVENS
W + ROLE = LOWER
X + DEUCES = EXCUSED
Y + BEAM = MAYBE
Z + RACY = CRAZY
These extra letters form a connect-the dots picture: