Tracing the bullets at Columbine.
A long-hidden document helps clear a Denver cop -- and raises new questions about the official version of the Columbine attack.
Ten questions for the legislature's Columbine committee.
Dismissed lawsuits leave victims' families frustrated.
The bullet in the backpack and other Columbine mysteries.
The sheriff's office responds.
Tracking the official story of the secret Columbine affidavit.
Two years after the shootings, 60 Minutes brings Columbine back to prime time -- and local officials get camera-shy.
It may take years to sort out what happened during the “missing” minutes at Columbine.
Sheriff Stone's report says his officers did everything right at Columbine. The evidence tells a different story.