Related Clues:

• Stalin's enforcer concealed routine bugs
• Oyster bed treasures
• What of her mistress Carol Ann Duffy felt against her own skin
• Pasteur's study
• They may be examined on slides
• Bad thing to have on food
• I ate crab at sea, hence my indigestion?
• Bugs found in hair etc -- a bride's revolting
• Tiny creatures European found in ancient part of central Asia
• Possible cause of upset in cabaret, I suspect
• Potentially hostile agents work to break secret police chief
• Oysters' prizes
• Strung treasures
• Gems from the sea
• The swine won't appreciate them