“The old man,” declared Hallen, promptly.

“Nonsense!” cried Allen. “Mr. Wheeler is incapable of a deed like that! Why, I’ve known him for years——”

“Don’t talk about incapable of anything!” said Burdon. “Most murderers are people whom their friends consider ‘incapable of such a deed.’ A man who is generally adjudged ‘capable’ of it is not found in polite society.”

“Where’s the weapon,” asked Keefe, abruptly, “if Mr. Wheeler did it?”

“Where’s the weapon, whoever did it?” countered Burdon. “The weapon hasn’t been found, though I’ve hunted hard. But that helps to prove it one of the family, for they would know where to hide a revolver securely.”

“If it was Mr. Wheeler, he’d have to hide it in the den,” said Allen. “He never goes over to the other side of the house, you know.”

“It isn’t in the den,” Hallen spoke positively; “I hunted that myself.”

“You seem sure of your statement,” said Keefe. “Couldn’t you have overlooked it?”

“Positively not.”

“No, he couldn’t,” concurred Burdon. “Hallen’s a wonderful hunter. If that revolver had been hidden in the den, he’d have found it. That’s why I think it was Mrs. Wheeler, and she took it back to her own rooms.”