A scientist who has turned traitor escapes by killing a clone of himself, but leaves a copy of consciousness behind. To understand what happened the consciousness get put into a modified soldier clone of the ‘Ghost Brigade’, but doesn’t take initially. The story revolves around the nobody is completely sure whether to trust the clone, especially when bits of the memory start coming back. Is this clone going to be becomes a traitor? Is he going to become the scientist or he is a person in his own right? What happens if the a super-enhanced soldier has the mind of a traitorous scientist? So you could say it - whether it is nature or nurture.
Mostly this book sets the background for one of the most interesting groups from the book “Old Man’s War” – The Ghost Brigade. A force of special forces soldiers who are cloned from people who are dead, and who are born, as adults, knowing they are soldiers and their destiny is to protect humanity.
If you enjoyed Old Man’s War this is also forms it’s sequel and is well worth reading.