Two girls accused of stabbing a classmate in a southeastern Wisconsin park to please a fantasy character called Slender Man will find out this week whether they will be tried on attempted homicide charges. A preliminary hearing for the two girls is set to begin Monday in Waukesha County Circuit Court, where a judge will decide if there's enough evidence to order a trial. Prosecutors charged the girls as adults with first-degree attempted homicide in the attack last May, and each could be sentenced to up to 60 years in prison, if tried and convicted. According to court documents, the girls had been planning to kill the victim for months to curry favor with the fictional Slender Man, discussing their scheme using code words. They lured the girl to a wooded Waukesha park where she was stabbed 19 times. It's unclear from the documents who did the stabbing.