 Once Wolfe has the statements, he sends Archie, Orrie, Saul Panzer, Fred Durkin, Dol Bonner, and Sally Colt to investigate every location visited by the principals.Four days later, a man delivers a small package to the brownstone; it proves to contain a spent .38 bullet, which Wolfe turns over to Cramer for testing.Following a night of repeated attempts by the police to call Wolfe or gain entry, Wolfe learns from Cramer that the bullet came from the same gun that killed both Eber and Brigham.