“Very likely,” agreed the captain. “We’ll see him later. Where was Mr. Portersham when he saw Senator Garnford?”
“In the library.”
“I’ll go into the library,” announced Douglas.
“The door is locked. I guess Mr. Portersham locked it when he went away. The other rooms are open.”
“All right!”
Nick Carter did not take any part in this colloquy. He was listening closely, however, and making a mental note of everything that was said.
They went into the dining room, bedroom, sitting room, and public office that had been used by Portersham, but not into the library. The door of this last-named apartment was the only one that was closed and fastened.
“Haven’t got a key to this door, have you, Briggs?”
“No, sir. Mr. Portersham carries it himself, always.”
“What do you think, Mr. Carter?” asked the chief of police, in a rather dubious tone.