Possible Clues:

• Under assumed identity
• With identity kept secret
• Defective cognition is unknown
• Coining alias, to appear unidentifiable
• In disguise
• With true identity concealed
• Pub - one's closed, but admitting minor functionary in disguise
• Unimportant person turned up at home and went inside, into the unknown
• Single soldier finally going into manoeuvres in disguise
• Covertly got in coin for change