Possible Clues:

• Feel bitter about crossing Atlantic for a defendant
• Party in a divorce case to take umbrage over Koi's home
• Returner of questionnaire gloomy after change at top
• Troubled person facing depression — one in a divorce case
• Someone questioned grudge involving small lake
• One in court runs down missing leader
• Feel bad about arresting mere defendant
• Likely divorcee's grudge holding water
• Defendant with grudge about a pool of water