“You know about it. You have been questioned about it.”

“I know I have, but what about it?”

“It must have been apparent from the questions. The medical examiner thinks it was cyanide and expects the autopsy to verify it. Emil Hatch uses potassium cyanide in his work with metals and plating, and there is a large jar of it on a cupboard shelf in the workshop one floor below, and there is a stair from Bottweill’s office to the workroom. Anyone who knew that, and who also knew that Bottweill kept a case of Pernod in a cabinet in his office, and an open bottle of it in a drawer of his desk, couldn’t have asked for a better setup. Four of you have admitted knowing both of those things. Three of you-Mrs. Jerome, Leo Jerome, and Archie Goodwin-admit they knew about the Pernod but deny they knew about the potassium cyanide. That will-”

“That’s not true! She did know about it!”

Mrs. Perry Porter Jerome’s hand shot out across her son’s knees and slapped Cherry Quon’s cheek or mouth or both. Her son grabbed her arm. Alfred Kiernan sprang to his feet, and for a second I thought he was going to sock Mrs. Jerome, and he did too, and possibly he would have if Margot Dickey hadn’t jerked at his coattail. Cherry put her hand to her face but, except for that, didn’t move.

“Sit down,” Stebbins told Kiernan. “Take it easy. Miss Quon, you say Mrs. Jerome knew about the potassium cyanide?”

“Of course she did.” Cherry’s chirp was pitched lower than normal, but it was still a chirp. “In the workshop one day I heard Mr. Hatch telling her how he used it and how careful he had to be.”

“Mr. Hatch? Do you verify-”

“Nonsense,” Mrs. Jerome snapped. “What if he did? Perhaps he did. I had forgotten all about it. I told you I won’t tolerate this abuse!”