The blind spots / Thomas Mullen.

Seven years ago, everyone in the world went blind in a matter of months. Technology helped people adjust to the new normal, creating a device that approximates vision, downloading visual data directly to people's brains. But what happens when someone finds a way to hack it and change what people see? Homicide detective Mark Owens has been on the force since before The Blinding. When a scientist is murdered, and the only witness insists the killer was blacked out of her vision, Owens doesn't believe her - until a similar murder happens in front of him. With suspects ranging from tech billionaires to anti-modernity cultists - and with the bodies piling up - Owens must conduct an investigation in which he can't even trust his own eyes.