Heinrich looked sheepish. "I could not," he said. "Kraus had become suspicious of Lena; he feared she was going to betray them and the note was a warning to her. It said that if they were caught they would see to it that she went to jail mit them. At that time you were all suspecting poor Lena, and I was afraid you would send her to jail before she had a chance to prove to you that she was loyal."
"You're in love with Lena, aren't you?" asked Mr. Cook.
"We are to be married," said Heinrich, proudly, his eyes shining.
"Did Karl suspect that Lena was treacherous?"
"I think not until he saw that note."
"He was going to read it to us though."
"He would not have read it," cried Heinrich hotly. "He would have made up something, not what it said at all."
"Who shot Lena?"
"Kraus shot her. She was going to your office to warn you that your factory was going to be blown up, and he shot her to prevent that."
"Who was the man with the whiskers?" asked Bob.