The Matt Bass Scheme
In mid-June 1932, Eliot Ness, having compiled a list of Frank Nitti's breweries & distilleries, began a series of raids designed to break the back of the Capone empire. This puts the pressure on Frank Nitti, Capone's lieutenant. Nitti calls a meet with Seth Otis and Phil Grier, who jointly own the biggest speakeasy in Chicago, the Hotsy Totsy Club.