Possible Clues:

• Saw Ern in solution
• Solution in retort
• Solution (to problem)
• 'Jeopardy!' offering
• From Canadians we received return in kind
• Correct reply
• Response coming from Americans we regretted
• Landmass in quasi-Arcadian area
• The solution's found right after a news broadcast
• Come back to break the news: almost all are captured