Anything from ninja-confusion tactics like Alpharius Omegon, to someone's pretending to be you and committing crimes in your name, to people who genuinely believe they're the same person.
Just as long as it's a relatively persistent thing, and not just a brief "I Am Spartacus" distraction tactic.
by fishinexcess
1 Comment
Brothers in Arms and Mirror Dance by Lois McMaster Bujold. They’re about midway through a multi-volume series so you may want to start at the beginning (Shards of Honor), but these 2 have what you’re asking for.