That seems narrow minded. Why dont you perform a bill review where you just review the bills like other legal fee auditors?
That kind of review is not fair to the client or the law firm. The law firm will not accept the audit results, claiming, rightfully so, that the auditor did not review all the work product. And the client is not receiving a complete picture. For example, we performed a review of the invoices in a case in Boston where the attorney billed .2 hours numerous times to draft letter over a month-long period for a total of $400. The client thought billing .2 to draft numerous letters was acceptable, until the on-site portion of the audit disclosed there was only one letter written during that period and it was four lines long! A mere bill review would not have uncovered that.