The planet Vagra II which houses Armus is in the uncharted Zed Lapis sector.
	There is an upcoming Martial Arts competition on the USS Enterprise, scheduled to take place in three days time. Tasha wants Worf to help her with the Mishiama Wristlock and Break.
	Part of Picard's speech to Armus is taken from Shelley's "Prometheus Unbound" - "All spirits are enslaved that serve things evil".
	Worf is made acting Chief of Security after Yar's death.
	'Skin of Evil' marked the last regular appearance of Lieutenant Natasha Yar (Denise Crosby), although the actress did return to the show in subsequent episodes ('Yesterday's Enterprise', 'The Mind's Eye', 'Redemption', 'Unification').

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