"But in that case," said Stephen looking up, "I do not see what Santiago had to gain. Robin wanted Bess to marry him. He wanted to inveigle her into the case so that she might not refuse out of fear. But what would that matter to Santiago. Her marriage with Joyce would not have helped on his schemes." "True enough," said Herrick musingly, "but I daresay it was Frisco who suggested the marriage. He wanted to get the money through his son, and perhaps thought he would get more if he put off Robin with Bess." Miss Endicotte reddened. "Thank you for nothing Jim," she said indignantly, "I was evidently to be a pawn in the game." "It seems to me that we have all been pawns," said Jim grimly, "just consider the mistakes that have been made while we have been searching for the true assassin of Colonel Carr." Bess laughed. "First of all I was suspected," she said. "Oh, no; that was only a half-hearted attempt on the part of Frisco and his precious son. There was no real evidence to implicate you Bess. I think--speaking for myself--that I first suspected Robin Joyce. It was your remark about his income Stephen, that aroused my suspicions. Well the chain runs as follows," and Herrick ticked off on his fingers, "Joyce first on the authority--mainly--of the pistol. He said he got it from the Don so I suspected Manuel. He proved his innocence, and accused Pentland Corn. I saw him and he told me he had picked up the pistol on the lawn of this house. It was his belief that Mrs. Marsh was guilty." "And myself?" said Stephen with a smile. "No, you were like Bess and came into the matter on your own account. I never believed you had anything to do with the affair. But your step-mother is the last whom I believed might have something to do with it. Certainly she had; but from her letter we know she didn't kill the man. And here we come to a dead stop." "What about Frisco?" said Marsh-Carr. "I believe he is the guilty person," said Dr. Jim positively, "are you going to defend him, Bess?" The girl looked troubled. "I admit that matters look black against him," she said slowly. "He threatened the Colonel; he was alone in the house with him, and Mrs. Marsh found him ready to fly. On the other hand there is something to be said in his favour. Evidently he should have had a share in this treasure. For some reason the Colonel would not give it to him during his life, and only afforded him a chance of getting it after Stephen's death--" "Not even then," interrupted Herrick "for if Stephen had fulfilled the conditions of the will, the fortune would become his absolutely and he would be able to will it away." "Then I can't understand it," said Bess, "unless Frisco knew of this unjust will--for that it is, if he helped to get the treasure--and murdered the Colonel out of revenge." "I believe he did," said Stephen. "No!" put in Dr. Jim briskly, "I do not agree with you. It is my opinion that what Mrs. Marsh said to me before she died was the right view."