The police in the big city were looking for a thief.At last they caught him.But while they were taking photographs of him-from the front，from the left，from the right，with a hat，without a hat—he suddenly attacked the policemen and ran off.They tried to catch him，but he got away.
Then a week later the telephone rang in the police station，and somebody said."You are looking for Bill Cross，aren't you？""Yes.”
"Well，he left here for Wateibridge an hour ago."
Watebridge was a small town about 100 miles from the city.The city police at once sent four different photographs of the thief to the police in Waterbridge for them to catch.
Less than twelve hours later they got a tclephone call from the police in Waterbridge."We have caught three of the men，"they said hap-pily，"and we will catch the fourth this evening，we think.And we are sure to carry out your order very well."