A cop kills a fellow officer during a drug bust and claims it was an accident. Others suspect that it wasn’t.

A fingerprint expert spends decades investigating the death of an unidentified boy found in the woods in 1957.

Controversy over the alleged gold standard of forensic evidence.

How did the most wanted man in America, the serial bomber behind the Atlanta Olympics explosion, survive for five years in the North Carolina woods? And was he helped?

The toll of being a cop on the most successful force in the country.

How life has changed in the neighborhood where Trayvon Martin was killed.

How the CIA, under a program called MK-ULTRA, used a San Francisco apartment to dose johns with LSD.

The landmark article that changed the way communities were policed:

This wish to “decriminalize” disreputable behavior that “harms no one”- and thus remove the ultimate sanction the police can employ to maintain neighborhood order—is, we think, a mistake. Arresting a single drunk or a single vagrant who has harmed no identifiable person seems unjust, and in a sense it is. But failing to do anything about a score of drunks or a hundred vagrants may destroy an entire community. A particular rule that seems to make sense in the individual case makes no sense when it is made a universal rule and applied to all cases. It makes no sense because it fails to take into account the connection between one broken window left untended and a thousand broken windows.

The F.B.I. needs informants, but what happens when they go too far?

A survivor’s frightening account.

A Montana sheriff and a manhunt in the mountains.

A year in the life of an oxycodone addict.