I'm a Prodigy

I have a unique ability to live in other persons' minds and bodies for brief times under my control. I may be one of the rarest types of prodigies. Indeed, I may be the only person in the world having this capability. This story tells about a time I used this property to help a person who had been charged with robbery. I was foreperson of the jury. I think you'll find my story to be memorable.