Possible Clues:

• ''Are you calling ___ liar?''
• 'Drop -- line sometime'
• Culpa lead-in
• 'Culpa' preceder
• "Cry — River"
• 'Do ___ favor . . .'
• Start of a fault line?
• '___ virtute me involvo': Horace
• "— culpa"
• Start of an admission