Starr and his prosecutors were convinced that Hubbell knew all the Clintons' secrets that were under investigation and that, if pressured enough, Hubbell would tell all. On April 30, 1998, Hubbell and his wife were indicted for conspiracy, tax evasion and mail fraud. Hubbell had, in the course of Starr's investigation, provided documents as part of an immunity agreement with the Independent Counsel about his consulting agreements. Despite this agreement, Starr used this information to obtain an indictment of Hubbell, his wife, his accountant and his tax lawyer.