Thank you for the advice. It turns out the attorney had a copy of the tax return. They wanted to know what information the client had given me and wanted copies of my work papers. Also, copies of any correspondence between the client and my office. I believe the meeting went well for me but not so well for the client. The client did not give my office all income items. He had the same preparer for many years. The year in question, the preparer would not do the return the way the client wanted. The client then brought it to my office but did not give us the same information as his regular preparer,whom also was questioned. After that one year the client went back to his previous preparer.
My original post was on the wrong forum. Thank you to whoever moved it over.