"But taken in connection with the fully loaded pistol and the lack of powder marks about the bullet wound, it explains fully why none of the men in the office saw the murderer." "But--but how do you figure it out ?" asked Greig, more puzzled than ever.
"I shall not reveal that at present," answered Britz.

"It will help our investigation to permit the murderer to believe that we don't know how he got to Whitmore.

From the statements we have obtained, it is evident that conflicting interests are involved in the crime.

We shall direct our energies toward bringing these adverse elements into active conflict, and, in the heat of battle, the murderer will be revealed." They had reached Grand Central Station, and, luckily, had to wait only ten minutes before boarding a train for Delmore Park.

During the short journey Britz fell into one of his deep silences, from which Greig did not disturb him until the train drew into the Delmore Park station.
Lieutenant Britz was too experienced a detective to rush unprepared into the home of the Collinses in the hope of obtaining incriminating evidence.