Answer:

culprit

Answer	Crossword Clue
CULPRIT	Guilty party
CULPRIT	Crime committer
CULPRIT	Perp

CULPRIT	Offender
CULPRIT	Guilty individual.
CULPRIT	Guilty one
CULPRIT	He did it
CULPRIT	Perpetrator

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.