Two 12-year-old southeastern Wisconsin girls charged with trying to stab their friend to death to please a mythological creature had struggled to decide who should do the deed.
According to a criminal complaint, the girls said they had been planning to kill their 12-year-old friend for months to please Slenderman, a fictional online character.
The complaint said they invited the girl to a sleepover Friday. They planned to tape her mouth shut, stab her in the neck and run away to Slenderman's mansion.
Instead, they attacked the girl in Waukesha on Saturday, handing the knife back and forth between them before one girl held the victim down and the other stabbed her 19 times.
One girl told detectives she regretted it. The other said she was sorry.