That morning he made excuse to leave the old man seated in his study, saying that he wanted to speak to Levi and give him a message for one of the clerks from Old Broad Street. Outside in the hall he sprang noiselessly up the stairs, and, pulling open the baize-covered door, swiftly examined the great iron fireproof door so carefully concealed and secured. His heart failed when he recognised the impossibility of passing beyond. The door was enamelled white like the panelling up the stairs, only over the small keyhole was a flap of shining brass bearing the name of a well-known safe-maker. At imminent peril of discovery by Levi, who often shuffled in noiseless slippers of felt, he lifted the flap and peered eagerly beyond. He could, however, see nothing. The hole did not penetrate the door.
Then, fearing that he might be discovered, he slipped downstairs again, and went to examine the front door. The bolts were long and heavy, and the chain was evidently in use every night.
In the kitchen he found Levi, preparing his master’s frugal meal, which usually consisted of a small chop, a piece of stale bread, and one glass of light claret. His visit below gave him an opportunity of examining the fastenings of the windows. They were all patent ones, and, besides, the whole were protected from burglars by iron bars.
Patent fastenings were also upon the windows of the study, looking forth upon Park Lane, while often at night the heavy oaken shutters were closed and barred. He had never before noticed how every precaution had been taken to exclude the unwelcome intruders.
Through the whole morning his brain was actively at work to discover some means by which an entry might be effected, but there seemed none.
The secret, whatever it might be, was certainly well guarded.
He went across to the club to lunch, and returned again at three o’clock. About four he rose, asking old Sam, who was seated writing, for a document from the safe, the key of which was upon his watch-guard. The millionaire took out his watch and chain and handed them to his secretary, as he so often did, while the latter, crossing the room, opened the safe and fumbled about among some papers in one of the drawers.
Then he re-locked the safe, handed back the watch and chain, and re-seated himself at the table. Those few brief moments had been all-sufficient, for upon the bunch was the latch-key of the front door, an impression of which he had taken with the wax he had already prepared. The duplicate key could, he knew, be filed out of the handle of an old spoon, and such was his intention.
He had hoped to find upon the bunch the key to the iron door on the stairs, but it was not among them. He knew each key by sight. The old man evidently kept it in a safer place—some place where the hand of none other might be placed upon it.
Where did he keep it?