"More than 200 tribal chiefs have been killed, and not a single culprit brought to justice."

But a magistrate investigating the murder cannot name a single culprit.

There is no single culprit - except, perhaps, human nature.

Experts in both pay and corporate governance say that there is no single culprit - except, perhaps, unchecked human nature.

The single most likely culprit for the rising rates of these eating disorders, experts say, is the spread of dieting.

The single biggest culprit is the gasoline-fueled car.

Although there is no single culprit in the decline of South Orange's business district, shopping mall culture has taken a huge toll.

Like clues to a murder that suddenly point to a single culprit, the mystery in my shopping cart revealed itself.

The Texas deaths are so concentrated that researchers are considering the possibility a single culprit might be at fault.

While it's convenient to pin the events on a single culprit, it's also bad science.