may have seen Sir Horace before Holymead arrived."

"Quite true, Rolfe," said Crewe. "I haven't lost sight of that point. I
think you will agree with me that there is a bit of a mystery here which
wants clearing up."

They drove back to town, and, in accordance with the arrangement Crewe
had made with Mr. Walters before leaving the court, they waited on that
gentleman at his chambers in Lincoln's Inn. There Crewe told him of the
result of their investigations at Riversbrook. Mr. Walters was
professionally pleased at the prospect of destroying the evidence of
Kemp. He was not a hard-hearted man, and personally he would have
preferred to see Holymead acquitted, if that were possible, but as the
prosecuting Counsel he felt a professional satisfaction in being placed
in the position to expose perjured evidence.

"Excellent! excellent!" he exclaimed, rubbing his hands with
gratification as he spoke. "Knowing what we know now, it will be a
comparatively easy task to expose the witness Kemp under
cross-examination, and show his evidence to be false." Mr. Walters looked
as though he relished the prospect.

It was arranged that Inspector Chippenfield should be called to give
evidence in rebuttal as to the impossibility of seeing the library
window through the tree, and that an arboriculturist should also be
called. Mr. Walters agreed to have the expert in attendance at the court
in the morning.

But Crewe had something more on his mind, and he waited until
Chippenfield and Rolfe had taken their departure in order to put his