Gravens v. State

Gravens (defendant) handed a bank teller a note demanding money along with some indecipherable writing; when the teller returned the note and, raising her voice, asked him to explain what he wanted, Gravens became flustered and left without completing the robbery. He was convicted of attempted robbery after the jury was instructed that his voluntary-abandonment defense required proof the abandonment originated with him and was not attributable to any extrinsic circumstance; he appealed the instruction and his conviction.