Sherlock Holmes - Deductions

“So, Watson,” said he, suddenly, “you do not propose to invest in South African securities?”
“Both door and window were only open for a very short time, however.”
“How do you prove that?”
“Because the candle was not guttered.”

“Feeling sure that the window had been open at the time of the tragedy, I conceived that there might have been a third person in the affair, who stood outside this opening and fired through it. Any shot directed at this person might hit the sash. I looked, and there, sure enough, was the bullet mark!”

“I think, Inspector,” Holmes remarked, “that you would do well to telegraph for an escort, as, if my calculations prove to be correct, you may have a particularly dangerous prisoner to convey to the county jail.

“You need not be uneasy. He will not try to escape.”
“How do you know?”
“To fly would be a confession of guilt.”
“Then let us go to arrest him.”
“I expect him here every instant.”
“But why should he come?”
“Because I have written and asked him.”
“But this is incredible, Mr. Holmes! Why should he come because you have asked him? Would not such a request rather rouse his suspicions and cause him to fly?”
“I think I have known how to frame the letter,” said Sherlock Holmes. “In fact, if I am not very much mistaken, here is the gentleman himself coming up the drive.”