1. person guilty of setting fire to property.   Hint First letter clue   2. person who is unable to sleep.   First letter clue   3. shrewish, abusive woman or termagant.   First letter clue   4. person who holds opinion contrary to accepted belief.   First letter clue   5. one who constantly talks about oneself.   First letter clue   6. gang or troop of nomads.   First letter clue   7. agent or person sent on secret mission.   First letter clue