The Black Box, by E. Phillips Oppenheim. This 1915 book was an early movie tie-in. The movie, made also in 1915, is unfortunately lost.

Oppenheim was a prolific and popular writer — and quite inventive. How could you not want to read about the “pocket wireless” or the “phototelesme” or find out information from young women by “very dodgy means” (as one smooth reader put it)?
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I can’t get your newsfeeds to work, and I would LOVE to subscribe to your website odds and ends - can you doublecheck and make sure they’re up and running, and let me know? Thanks!
Thanks for the note, Trish! I never knew it didn’t work quite right — apparently Safari managed to know what I wanted, even if the HTML was wonky
Should be all fixed. Thanks for reading!