“Therefore,” he went on, “Colonel Ryder was murdered. The grenade couldn’t possibly have exploded inside the suitcase by accident. Suicide, no. The man was not an idiot. He did not take the grenade from the desk drawer to kill himself with it, put it in the suitcase, and hold the lid open just enough to permit him to insert his hand to pull out the safety pin. That’s the only way he could have done it, because the frame of the lid was bent outward too. Not suicide. Only one conclusion is tenable. It was a booby trap.”
He picked up the grenade and indicated the thick end of the pin. “You see that notch. I put the grenade in the suitcase, attach one end of a piece of string-even a narrow strip torn from a handkerchief would do-under that notch on the pin, pull the lid nearly shut, giving myself just room enough to work, attach the other end of the string to the lining of the lid at a front corner-probably with an office pin right there on the desk, a handy place to work-and close the lid. Two minutes would do it-not more than three. Whenever and wherever Colonel Ryder opened the suitcase, he would die. Since the lid was closed when the grenade exploded, probably he jerked the lid open to put something in and immediately snapped it shut again, without noticing the string. Of course, even if he had noticed it, that wouldn’t have helped matters any.”
I was considering the matter. When he stopped I nodded. “Okay,” I agreed. “I’m right behind you. Next. Did Sergeant Bruce take it because she-”
“No,” he said positively. He put the grenade in a drawer of his desk. “That’s all.”
“It’s not even a start,” I snorted.
“It’s all for tonight.” He stood up. “Come to my room at eight in the morning, when Fritz brings my breakfast. With your notebook. I’ll have some instructions for you. It will be a busy day. We’re going to set a booby trap-somewhat more complicated than that one.”
Chapter 6
At 10:55 Tuesday morning I sat on a corner of my desk in Nero Wolfe’s office, surveying the scene and the props. I had done the arranging myself, following instructions, but I had about as much idea what was going on as if I had been blindfolded at the bottom of a well.