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The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from The Case of the Golden Bullet by Grace Isabel Colbron and Augusta Groner: he could have let the latter escape with much more safety during the
night. Horn let his eyes wander about the rooms again, and said
slowly: "Then the murderer is still here - or else - "
"Or else?" asked the doctor.
"Or else we have a strange riddle to solve."
Johann had laid the pistol down again. Muller stretched forth his
hand and took it up. He looked at it a moment, then handed it to
the commissioner. "We have to do with a murder here. There was
not a shot fired from this revolver, for every chamber is still
loaded. And there is no other weapon in sight," said the detective
quietly.
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