The Threshold

Is anyone still there?Iris built Orpheus, a machine to answer one clinical question: when the brain falls silent, is the person still inside, or already gone?Then, at the exact threshold where the mind should vanish, Orpheus finds a signal - structured, repeatable, identical in every dying brain. She calls it the Chord. No message. No memory. No voice from beyond. And that silence is the most disturbing evidence of all: perhaps the brain does not produce consciousness, but receives it, the way a radio does not compose the music it carries.Before Iris can grasp what she's found, her mentor buries it - and turns the machine toward profit, control, and people who were never meant to have it.Cast out of her own work, she faces a truth she can confirm only one way: by crossing the threshold herself.What if the mind is not what we think it is?