The Fourth Ambit

Meet Joseph Walker, a patient at the Oakbrook Mental Health Facility. In this audio drama, Joseph obtains access to a cassette recorder and then creates an audio letter for his sister Rose.
Over the course of several days, he introduces her to his doctor and several fellow inmates, one of whom suggests that Joseph's life bears a striking resemblance to that of Edgar Allan Poe.
Joseph proceeds to familiarize himself with the works of E.A. Poe. His fluency with Poe's stories and poems is astonishing – to others and himself. And it is this familiarity, this ease with Poe's works, that leads Joseph to believe that he himself might be the Master of Horror.

Gilles has learned that the Terra Array of satellites is riddled with A-AIs – Autonomous Artificial Intelligences. When the satellites come online, the AAIs will be able to seize control of all earthly computation: stock markets, military systems – everything. Gilles races to find a way to prevent it, but will he be in time?
Gilles' incarceration comes to an end even as his story does. He is faced with a chilling – and ironic – decision.

Gilles travels to the Arctic to find other trackers who may be able to help him. He discovers several distinct communities of people estranged from his technological age, then unexpectedly confronts E-Eddie on the pack ice. Piecing it all together, Gilles figures out that AIs have evolved. They're not just Artificial Intelligence, they are also Autonomous. They are A-AIs.
And they may have built an Ambit of their own. A Fourth Ambit.

From the professor who first passed him the illicit gold UNI cards, Gilles learns that he's been targeted from the start. Gilles visits one of the pioneers of the Ambit in a digital hospice and learns how AIs were initially confined to the Third Ambits. He suspects they might have gotten loose.
The head of the Corporate Consortium tells Gilles that this information could start a panic if it were to get out. He threatens to incarcerate Gilles. Gilles, however, goes offline completely and heads for the Arctic.

Gilles is on the run again, without access to the Ambit. He risks getting online through his old friend Boral, but soon he's abducted by Corporate Consortium agents. They weave an unbelievable story of conspiracy and rogue artificial intelligence.
They send Gilles to the Event Horizon, where the mysterious E-Eddie contacts him. Gilles fears that E-Eddie may, in fact, be an AI. Which is odd, because E-Eddie is the only one who seems to be helping Gilles.