Possible Clues:

• Thing that's different from the rest
• Nonconformist having not even a single way to escape (3.3.3)
• Ordinary bloke initially escaping suspicion surrounding complete maverick
• Weirdo's old shed finally decorated
• Eccentric person
• They don't fit plywood, done outside or inside
• Different individual
• Thing or person contrasting with others
• Unconscious after excess drug taken? An anomalous response
• Thoroughly cleaned after excessive amount of drug that's left over