A moment later Locke, searching through the piles of boxes, bales, and crates, found Eva, just recovering from her fright, and in the joy of having saved her by his timely return forgot, for the moment, to pursue the terrible villain, who managed to reach a waiting closed car and was whisked away.

Thus it was that after their return to Brent Rock, on the following day Eva was ministering to her father, still hopelessly insane through the failure to discover the antidote to the madness.

While Eva was engaged in her ministrations up-stairs Locke was finishing some experiment in his laboratory.  Down-stairs, Balcom had just arrived in the hall, where he was met by Zita with a report of what had happened the day before.

“Tell it to me in the strong-room while I place this package there,” Balcom whispered, indicating the package which he had brought.

Together Balcom and Zita descended to the cellar and made their way to the Graveyard of Genius as Zita poured forth her story, unmindful of the fact that the butler had seen them go down and was watching very skeptically.  In the Graveyard Balcom unwrapped a small model of a motor and placed it on the shelf.

Eva, having left her father, came upon Locke in the hall, and there they stood talking for a moment, when the butler approached apologetically.

“Begging your pardon, Miss Brent,” he reported, “but I just saw Mr. Balcom go down to the strong-room with Miss Zita, and I thought you might like to know.”

“Thank you,” nodded Eva, dismissing the butler and trying to show no concern in the matter.

But Locke shot a quick glance at her as the servant left, and it was evident that both felt the same suspicion, for Locke immediately excused himself and hurried down-stairs.

In the Graveyard Balcom and Zita were talking in subdued tones as Zita whispered.

“I suppose you know,” she nodded, “that before Mr. Brent went mad he wrote a confession with a list of these inventions which International Patents has suppressed?”

Balcom could scarcely conceal his rage.  “Yes, I know it,” he replied, savagely.  “That confession would cause a great deal of trouble.”

Low as they were talking, they would have been even more careful had they known that Locke was listening outside and that, even as they turned to leave the strong-room, he had sidled out of the way and was rejoining Eva in the library.

Locke had scarcely told Eva what he had heard when she moved over to the safe and would have tried to open it had he not stopped her.  For he had heard the other two coming from the cellar, and even as it was they were at the hall door.

“My dear,” remarked Balcom as he entered and went to Eva, “since your father is not likely to recover, I must ask you to transfer all the company papers from his private safe to the office of the company.”

Eva did not respond to the fatherly manner assumed by Balcom.  Instead she almost point-blank refused to do as he had requested.