Last week’s flurry of legal action in the Bank of America Corporation controversy raised new questions about the role that the bank’s former general counsel played in the deal.

Did Timothy Mayopoulos really change course on whether the bank should disclose to shareholders the mounting losses at Merrill Lynch & Co., Inc. before they voted on the merger? If so, why? In addition, was Mayopoulos misled by other executives about the size of Merrill’s losses?