This story out of San Diego has sued Wilkie Farr over its work with Kroll, investigating the finances of the City. 

"City Attorney Michael Aguirre picked a new legal fight for San Diego this week, filing two malpractice suits against a New York law firm that probed the city’s financial failures and prepared a report on them a year ago.
The lawsuits, which target a high-powered law firm that has handled billion-dollar deals for business clients, were filed without City Council approval. As a result, they will test not only Aguirre’s legal strategies, but also new council limits on his ability to file lawsuits without authorization.

Aguirre alleges that Willkie Farr & Gallagher overbilled the city and essentially failed to follow terms of a contract to assist the risk-management firm Kroll Inc. with a project that became an 18-month, $20 million effort.
The suit alleges that the law firm duplicated much of Kroll’s work, submitted inadequate bills to disguise that, and went beyond the scope of its agreement, in part by billing the city for “lobbying” meetings with The San Diego Union-Tribune editorial board and the San Diego Regional Chamber of Commerce. "