The signal was not supposed to be there. His job was to make sure no one ever knew it was. New York, 1951. Frank Dwyer is a Bureau surveillance agent, methodical and invisible, assigned to monitor a Soviet cultural attaché whose activities are of passing interest to his superiors. The work is routine - until a frequency-hopping signal appears on a monitored channel: a signal that should not exist, that uses a switching pattern more sophisticated than anything in current operational use, that bears in its architecture the unmistakable shape of something Dwyer has never encountered and cannot explain. He files a report. The report makes its way up the chain. And then, from a source he cannot identify through a channel that does not officially exist, an instruction arrives: destroy all records of the detection. The report. The transcripts. The technical analysis. Everything. The order is unambiguous. The order is absolute. But Dwyer has been listening to things that should not exist - and what he heard on that channel is not the kind of thing a man is designed to simply erase. Dead Air is the second novella in The Lamarr Legacy, a five-part conspiracy thriller tracing one suppressed invention across eighty-four years of deliberate silence.