My end is that the crime was committed half an hour earlier than reported; that Mrs.Douglas and Barker are both in a conspiracy to conceal something; that they aided the murderer's escape--or at least that they reached the room before he escaped--and that they fabricated evidence of his escape through the window, whereas in all probability they had themselves let him go by lowering the bridge.

That's my reading of the first half." The two detectives shook their heads.
"Well, Mr.Holmes, if this is true, we only tumble out of one mystery into another," said the London inspector.
"And in some ways a worse one," added White Mason.

"The lady has never been in America in all her life.

What possible connection could she have with an American assassin which would cause her to shelter him ?" "I freely admit the difficulties," said Holmes.

"I propose to make a little investigation of my own to-night, and it is just possible that it may contribute something to the common cause." "Can we help you, Mr.Holmes ?" "No, no! Darkness and Dr.Watson's umbrella--my wants are simple.