Answer: colonelmustard

AnswerCrossword Clue
COLONELMUSTARDNoted mustachioed suspect
COLONELMUSTARDSuspect in Clue
COLONELMUSTARDClue suspect
COLONELMUSTARDOne of the usual suspects?
COLONELMUSTARDCohort of Miss Scarlet perhaps