The Quantum Thief
A wonderfully detailed future, filled with AIs and nanotechnology and space travel with Mars and the Oort Cloud colonized, and many other wonders -- and troubles.
It opens with a character in a prison where they are pushed through many, many, many variants of the Prisoner's Dilemma. And then, in the middle of one, someone breaks in -- someone from the Oort Cloud -- to rescue him. They need a thief. And their thief needs his memories back.
On Mars, Isidore is called in to inspect an ugly murder scene before the body is taken for resurrection. With what was done to him, they may not be able to restore the chocolatier's mind. (Our introduction to the subtle protoccols of Martian privacy and memory. Gevolut, the sharing of memories, is an elaborate system; unless someone agrees, you can't remember their conversation with you.
The tales take a while to collide. Though on the way there, there are questions about the Rebellion on Mars, the importance of Watches, the effect of drinking a glass of wine, nine Watches inscribed with attributes of God, a long lost lover, an unknown father, a secret Resistance, and much more. A wonderful tale of adventure on a complex background