Jurors in the D.C. Madam case will be subjected to disturbing sexual secrets of Washington’s working girls and their high-priced clients, but the case will not be about prostitution, a federal prosecutor said during opening arguments Monday.

Calling the witness stand “probably the hottest seat in D.C. this year,” Assistant U.S. Attorney Catherine K. Connelly told the jurors the case against Deborah Jean Palfrey was about racketeering, money laundering and mail fraud, not sex.