"Now then," said Calvert, when he and Tracey had digested this information, "what about the forged letters?"
"I did not write them. Why should I?"
"Well, you might have made up your mind to kill Flora, and then have arranged for me to be lured there, so that I might be accused."
"But I did not kill her; and had I written the letter to lure you, I should not have sent one to Miss Mason also. I could not accuse her."
"That's true enough," said Arnold perplexed; "so the key was lost in this room. Have you many visitors, professor?"
"Very few," said Bocaros, glancing at Tracey. "You often come," this was to the American.
"I do," assented that gentleman; "are you going to accuse me of taking the key?"
"The key has gone."
"That is as much as to say I took it, and killed Mrs. Brand," said the other, with a shrug; "but who else comes? That maid?"
"She only paid me a visit after the murder."