Police interrogation video of two Wisconsin girls accused of nearly killing a classmate to please a fictional character shows them describing their calculated plan to kill their friend.

WISN-TV obtained the 9-hour videotaped interrogation of the girls, ages 12 and 13. One of the girls wipes away tears as she explains how they hoped to please Slender Man by killing their friend in a Waukesha park. She says they told their 12-year-old victim, Peyton Leutner, they were going to get help, but that they really planned to run away and let her die.

The other girl says they were arrested because they were "careless."

A Waukesha County judge will decide by next month whether the girls' case should remain in adult court or be sent to juvenile court.