Explore "The Mystery of the Ravenspurs" by Fred M. White on Textopian. Read with annotations and highlights.
"I don't quite follow it yet," said Geoffrey.
"And yet it is simple," Tchigorsky replied. "Here is a form of electric battery in the vault connected by tiny wires to every sleeping chamber occupied by a Ravenspur. In each of these bedrooms a powder is deposited somewhere and the wire leads to it. At a certain time, when you are all asleep, the current is switched on, the powder destroyed without leaving the slightest trace, and in the morning you are all as dead as if you had been placed in a lethal chamber--as a matter of fact, they would have been lethal chambers.