Liminal Protocols
Not eligible for purchase using B&N Audiobooks Subscription credits
Available on compatible , the free NOOK App, and in My Digital Library
NOOK App
Download NOOK app
NOOK Devices
NOOK eReaders
- NOOK GlowLight 4 Plus
NOOK Tablets
- NOOK 8.7" Reading Tablet
- NOOK 9" Lenovo Tablet
- NOOK 10" HD Lenovo Tablet
- NOOK Tablet 7" & 10.1"
- NOOK by Samsung Galaxy Tab 7.0 [Tab A and Tab 4]
- NOOK by Samsung [Tab 4 10.1, S2 & E]
Free NOOK Reading Apps
- NOOK for iOS
- NOOK for Android
BN.com website
Go to your Digital Library in My Account
This audiobook is narrated by a digital voice.
The algorithm isn't broken. It's evolving.
Marcus Cole is a "cleaner" for the digital age. Working the graveyard shift in a sterile, sub-zero server farm, his job is to review "Apex-Level Flags"-video content rejected by AI moderation for being too disturbing, anomalous, or dangerous for the public eye.
Tonight, Marcus has six files to process. But as the cooling fans hum and the blue light of the monitor burns into his retinas, he realizes these ...




















