 He put enough cyanide to kill a horse into a little gelatin capsule. Then he put the capsule in the crown on Mrs. Mullen's tooth. Oh, brother. And when the capsule melted, the cyanide hit the bloodstream. Oh, Urban, what would you do without me? Well, that was the end of that case. When the doorbell rang, Doc got rattled and I knocked him cold. Urban was very proud of me.