Related Clues:

• They're the last things you'd call
• What's wrong with them at last at the latter end?
• They're cast by blocking the sun
• Call option?
• They're rarely seen on rainy days
• See 4
• See 21
• Lady of Shallot was half sick of Richard's old backers
• The reverse of formal wear
• The reverse of shadows
• Follows secretly
• Top hat accompaniment
• Spies on, in a way
• Toss option
• Overzealous promgoer's choice, maybe