Possible Clues:

• Whistleblower perhaps accrues nuts
• Person saying it¿s you is bank client
• One pointing a finger
• Provider of charge account, cocaine addict
• A heartless critic, one exploiting Zola, for example
• One who brings charges
• Copper's hiding in tree and he's pointing the finger
• I could whip up case, involving copper, right?
• A line's a sound one to prosecute
• Employer holding up bill caught person raising charges