Algebra teacher, 24-year-old Colleen Ritzer, who was found with her throat slit by a box cutter in the woods near their Danvers school. She was sexually assaulted twice, once with a stick, and a note was found nearby that read “I hate you all,”Algebra teacher, 24-year-old Colleen Ritzer, who was found with her throat slit by a box cutter in the woods near their Danvers school. She was sexually assaulted twice, once with a stick, and a note was found nearby that read “I hate you all,”What a waste....... I’m sick to my stomach