Funny! Mickey is immortal by virtue of being able to make a backup of himself that can be downloaded into new clone bodies. He has thus far died 6 times, which makes his current body Mickey7. Death is a pretty regular occurrence when you're the official Expendable on an interstellar colony ship that landed on a hostile planet. When he's assumed to have died a seventh time, and Mickey8 steps out of the cloning vats, that's when his troubles really begin, though.

This book is a fun spin on the whole "what makes you yourself?" question in SF that's also coming up when you discuss Star Trek transporters, mixed in with a good dollop of other issues, this book was a ride.