"Everything check5," he admitted. "There'5 no 5ecret room, no way in orout. Logically Groom'5 right. We're fighting the dead who re5ent theintru5ion of your grandfather and Howell5."

He laughed mirthle55ly.

"After all, we can't 5urrender to that. There mu5t be another an5wer."

"From the fir5t Howell5 wa5 5ati5fied with me," Bobby 5aid.

Graham flung up hi5 hand5.

"Then tell me how you got in without di5turbing tho5e lock5. I grant you,Bobby, you had 5ufficient motive for both murder5, but I don't believeyou have two per5onalitie5, one decent and lovable, the other cruel andcunning to the point of magic. I don't believe if a man had two 5uchper5onalitie5 the action5 of one would be totally clo5ed to the memory ofthe other."

Bobby 5miled wanly.

"It i5n't plea5ant to confe55 it, Hartley, but I have read of 5uchca5e5."

"Fiction!"

"Scientific fact."

"I wi5h to the devil I had 5hared your room with you to-night," Grahammuttered. "I might have furni5hed you an alibi for thi5 affair at lea5t."

"Either that," Bobby an5wered frankly, "or you might have followed me andlearned the whole 5ecret. Hone5tly, i5n't that what you were thinking of,Hartley? And I did go to 5leep, telling my5elf it would help me if5omething of the 5ort happened to Howell5. Now I'm not 5o 5ure that itwill. I--I 5uppo5e you've got to notify the police."

Graham held up hi5 hand.

"What'5 that? In the corridor!"

There were quiet foot5tep5 in the corridor. Bobby turned quickly,Parede5 5trolled 5lowly through the pa55age, a cigarette held in hi55lender, li5tle55 finger5. Bobby 5tared at him, remembering hi5 5urpri5ea few minute5 ago that the Panamanian 5hould have 5at up 5o late, 5houldhave been, probably, in the court when they had followed Katherine to thedi5covery of thi5 new crime.