Below was a rough plan similar to those in The Closed Book, but which needed no second glance to show the exact spot where the abbey treasure lay hidden.

“See?” I cried excitedly. “The secret is at last revealed to us! What is written in The Closed Book was only in order to mislead any curious person who attempted to search. The truth was deposited in this casket by Godfrey before he left Scotland.”

And my three companions bent eagerly, and for themselves slowly deciphered the words after I had repeated them aloud to make certain of no misreading.

“Well, our next step is undoubtedly to go down to Crowland,” Fred remarked. “Let’s get the treasure first, and clear up the mystery afterwards.”

“Certainly,” we agreed in chorus, and then, after placing the Borgia jewels in Fred’s iron safe, we all smoked and discussed our future plans, finally deciding to go up to London again in the morning, as Crowland could be more easily reached from King’s Cross than from Scotland.

Next night, therefore, we arrived in town, Fred and Sammy putting up at the Euston Hotel, and I going home with Walter as his guest. On the morning after our arrival I deemed it wise to pack up the Borgia treasures, all save the poison-ring, the tiny crystal bottle, and the antidote, and deposit them with my banker’s manager, just as I had already placed The Closed Book in safe keeping.

The historic ring that had dealt death so frequently and had enabled the House of Borgia to become the most powerful in Europe, I put with the little bottle in the old velvet-lined jewel case and placed them aside in a drawer in Walter’s writing-table, intending later to take them down to Professor Fairbairn at the British Museum.

Fred Fenwicke had some pressing affairs to attend to in London, therefore it had been arranged not to go to Crowland till the following day.

We were much puzzled regarding the whereabouts of Glenelg and the hunchback, and also wondered whether Selby still remained a prisoner at Threave. The loaded weapon upon him proved that he intended mischief, therefore neither of us expressed much regret at leaving him in such evil case. The silence of his companions was, however, ominous.

While I had been down at the bank Walter had strolled round to Harpur Street, only to find the house still closed. Of Judith’s whereabouts I knew nothing. She had disappeared. Through those weeks I had been living in alarm and dread. Scarcely a day passed without some puzzling incident, and I longed to see my love again and hear a full and frank explanation from her.