Shatterbird

“Something like that.  Tattletale believes that Shatterbird’s power causes glass to resonate at a very particular frequency, where it generates that same resonation in other pieces of glass with the aid of her power, perpetuating the effect until it runs out of large pieces of glass to affect.”

> > [...]

“And,” Lisa said, “She probably has a reason for hitting the entire city like she does.”  She took another drink of water.  “Big pieces of glass help transmit the signal, maybe smaller shards help her in another way.  Probably helps or allows more delicate movements.”

Snare 13.1

I might not have noticed it if I hadn’t been listening through the bugs.  I primarily heard it through the moths and beetles, a sound like someone running their finger along the rim of a wine glass, painful to hear, only it kept getting sharper and higher pitched until it was well beyond the limits of anything my human ears could hear.  It was coming from the windows.

Plague 12.5