Related Clues:

• See 28 Across
• Stand against a wall
• One can be shown it
• Where to set books
• It's on the way out
• Knickknack holder
• Revolver, perhaps
• Place for a keyhole
• Part of a bookcase
• You may be shown it
• Coastal sandbank
• Cabinet's moving part
• Bookcase unit
• 'The Lady or the Tiger?' option
• Swinger at home