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Columbine Shooting and Waseca Murder Shock Nation

2/1/2026

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Summary

Story summary

On April 20, 1999, the Columbine High School shooting in Littleton, Colorado, killed 12 students and one teacher, drawing national attention.
Simultaneously, in Waseca, Minnesota, 16-year-old Jayme Larson discovered her 12-year-old sister, Cally Jo, murdered in their home.
Cally Jo had been stabbed, sexually assaulted, and left hanging in the stairwell.

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Story summary

On April 20, 1999, the Columbine High School shooting in Littleton, Colorado, killed 12 students and one teacher, drawing national attention.
Simultaneously, in Waseca, Minnesota, 16-year-old Jayme Larson discovered her 12-year-old sister, Cally Jo, murdered in their home.
Cally Jo had been stabbed, sexually assaulted, and left hanging in the stairwell.