3:30 p.m.
A visit to the village post office disclosed a hidden jewel . As far as Crane was concerned the fate of the two men was held in the hollow of the postmaster 's hand . The latter , with little hesitation , allowed him to delve into official secrets . He learned that David Cass had sent a letter , with a quick-delivery stamp on it , to William Cass , at A B C , East Fourteenth Street , New York , at 3:30 p.m. , on June 12 . So far as guilt or innocence was concerned there was nothing left to discover ; the connection between these two men was demonstrated . Farrell 's misidentification established another truth -- they were brothers . The letter , hastening to its destination , had contained the stolen money .