Well, over here, this is a Sensor. It senses when demons are near.” He moved toward Magnus, and the Sensor made a loud wailing noise. “Impressive!” Magnus exclaimed, pleased. He lifted a construction of fabric with a large dead bird perched atop it. “And what is this?” “The Lethal Bonnet,” Henry declared. “Ah,” said Magnus. “In times of need a lady can produce weapons from it with which to slay her enemies.” “Well, no,” Henry admitted. “That does sound like a rather better idea. I do wish you had been on the spot when I had the notion. Unfortunately this bonnet wraps about the head of one’s enemy and suffocates them, provided that they are wearing it at the time.” “I imagine that it will not be easy to persuade Mortmain into a bonnet,” Magnus observed. “Though the color would be fetching on him