As an adult I am confused and disturbed by the details of this crime. Children do not understand it and their world-view is unable to comprehend so much of it. Protect them from details.
When my daughter was around two, I was ready for her to move to her own bed. I knew helping children sleep in their own beds could be challenging, and I wanted the transition to be as easy as possible for her, so I thought naptime, instead of bedtime, would be the best way to slowly introduce this idea.