You awake expectantly. To your eager hands the body you occupy this morning is unfamiliar, though gratifyingly firm and sleek.

You find a mirror. Narcissist and voyeur, you pose and gaze in awe. Exceptional you are, yes, but unsatisfied. You feel compelled to soak up just a few more carefully selected souls.

Within hours you will shift, as you call it, again, for the life you are now living is merely another stepping stone. Each coming shift will bring with it new wisdom but erase recent memories. Gaps and lapses will challenge you. You will make mistakes. Yet you will succeed, as...