A team of a dozen outside investigators will soon descend on the D.C. government to interview employees, review electronic databases and study documents touncover the failures that led to the largest case of fraud in District history.

The heavyweight team of lawyers and auditors with WilmerHale and PricewaterhouseCoopers, enlisted by the D.C. Council, will bring all its resources to bear in an inquiry not unlike that of major corporate scandals, said WilmerHale’s William R. McLucas, who will lead the pro bono review. The two firms are committed to determining where D.C.’s internal controls crashed and recommending what must be done to shut the door on fraud, he said.