He loves spot the difference puzzles.

The police are doing their best to search for the fugitive.

This is the most difficult case I have ever faced.

He got involved in a love affair.

The Tiananmen Square incident is an important event in Chinese history.

The Marco Polo Bridge Incident was the trigger for the Sino-Japanese War.

I went to the police station yesterday.

Police dogs are very effective in tracking criminals.

He was terrified of living in a police state.

The head of the police station explained the details of the incident to the press.