This is the chilling true crime story of Isabella Guzman, the Aurora, Colorado teenager whose severe mental illness led to one of the most disturbing criminal cases in recent history. When Isabella's paranoid schizophrenia reached a psychotic break, she committed an unthinkable act against her own mother, stabbing her 151 times in their family bathroom.

Christina Formella, a 30-year-old special education teacher at Downers Grove South High School, systematically groomed and sexually abused her 14-year-old student for nearly 2 years. Court records reveal she documented each assault in her phone's Notes app while planning her wedding.

Christina Formella, a respected teacher and soccer coach from Downers Grove, Illinois, systematically groomed and abused her teenage student using sophisticated psychological manipulation techniques that fooled trained professionals for years. This isn't just true crime - it's survival psychology.

Christina Formella, a 30-year-old special education teacher and soccer coach from Downers Grove, Illinois, systematically groomed and sexually abused her teenage student beginning when he was just 14 years old. Her arrest bodycam footage went viral as investigators uncovered a digital trail of evidence spanning nearly two years.

Teen girls sentenced to life in prison - the youngest female killers in America revealedSix teenage girls committed murders so shocking that they received adult sentences. These juvenile killers were honor students, refugees, and quiet classmates whose crimes changed everything we know about young female murderers.