An employee allegedly embezzled 2 million dollars over years. Do I have a case against my accountant?

I am a doctor. An employee who had check writing privileges allegedly approximately embezzled 2 million dollars over years. I trusted her. She was writing hundreds of thousands of bonuses to herself. At times she was making more money than me due to the embezzlement. She was writing many thousands of dollars of Petty Cash checks which are not accounted for. My accountant even did an audit with an irs agent & missed embezzlement. My accountant knew that she was making more money than me, as he was doing all W2 forms. I was borrowing money to pay overhead and my accountant knew that too. I had regular meetings with my accountant regarding my books & he never brought anything suspicious to my attention. I don't understand accounting nor quickbooks. Currently I have an embezzlement accountant looking at my books to determine the extent of the embezzlement. Do I have a case against my accountant for negligence?