"Why not leave word for Brokaw and join MacDougall?"

"Because when the ship comes in I believe that a large part of
this mystery will be cleared up," replied Philip. "It is necessary
that I remain here. That will give us a few days in which to make
a further search for these people."

Gregson did not urge the point, but replaced the second letter in
his pocket with the first. During the evening he remained at the
cabin. Philip returned to Churchill. For an hour he sat among the
ruins of the old fort, striving to bring some sort of order out of
the chaos of events that had occurred during the past few days. He
was almost convinced that he ought to reveal all that he knew to
Gregson, and yet several reasons kept him from doing so. If Miss
Brokaw was on the London ship when it arrived at Churchill, there
would be no necessity of disclosing that part of his own history
which he was keeping secret within himself. If Eileen was not on
the ship her absence would be sufficient proof to him that she was
in or near Churchill, and in this event he knew that it would be
impossible for him to keep from associating with her movements not
only those of Lord Fitzhugh, but also those of Jeanne and Pierre
and of Brokaw himself. He could see but two things to do at
present, wait and watch. If Miss Brokaw was not with her father,
he would take Gregson fully into his confidence.

The next morning he despatched a messenger with a letter for
MacDougall, at Blind Indian Lake, warning him to be on his guard
and to prepare the long line of sub-stations for possible attack.
All this day Gregson remained in the cabin.