This has been dealt with in court in real life, for cases where someone has killed someone else while sleepwalking, and not had any recollection of the event, o

This has been dealt with in court in real life, for cases where someone has killed someone else while sleepwalking, and not had any recollection of the event, or any intent. http://en.wikipedia.org/wiki/Homicidal_sleepwalking http://en.wikipedia.org/wiki/Homicidal_sleepwalking As far as I can see, sometimes the killer is acquitted, sometimes is sentenced, and sometimes the sleepwalking counts as insanity, meaning the killer is committed to a secure hospital.