A series of reports published by the DOJ's Inspector General - Michael Horowitz. The first released IG report, 500 pages long, covered the HRC emailgate scandal. It revealed the use of private gmail accounts by James Comey (then FBI director) and others. This IG report is the weakest of the set, but opens doors to the Anthony Wiener laptop and crimes against children (Hillary, Clinton Foundation, others). The scope and size of IG's investigation is the biggest in history. Note that the IG report(s) cannot comment on active criminal cases with empaneled grand juries.