Related Clues:

• 'Have I ever steered you wrong?!'
• Having significant consequences
• Concerned with component of blood containing iodine — that’s worrying
• 'I would never lie to you!'
• Scammer's comment
• Notable person from Belgrade cut debts?
• Con artist's reassurance
• ''I won't let you down''
• "I know what I'm doing"
• One buried inside watery grave
• 'I know what I'm talking about'
• "Would I lie to you?"
• Not playing around
• "You can't be ___!"
• Solemn, not inclined to flippancy