Nice! In trying to describe this to a co-worker, I came up with "sci-fi whodunnit." Laurens Bancroft is 300 years old & has just committed suicide, or at least that's what the police think. However, Laurens Bancroft is alive again, because a human's consciousness is now stored in tiny "stacks" in the back of their neck, and if you die you can just be uploaded into a new body, or "sleeve." He's sure he was murdered, so he hires Takeshi Kavocs to prove this. Kovacs is an Envoy, which basically means "badass smart guy killing machine." Hijinks ensue. Every plot discrepancy I could some up with regarding stacks and sleeves and all the rest was answered satisfactorily by the author, leading to some rare awesomeness - a science fiction book with no glaring, obvious errors. I will read the next one.