I know who the thief is.
Maybe we'll get lucky and catch the thief.
Get the thief!
I'm not a thief.
Tom turned out to be a thief.
The thief admitted his crime.
No one lets a thief in their own home.
There is indisputable proof that Tom is the thief.
A little, old woman foiled the robbery by whacking the thief on the head with her cane.
Opportunity makes the thief
Sleep is the greatest thief, for it steals half one's life.
You need a thief to catch a thief.
Once a thief, always a thief.
Liar today, thief tomorrow.
The thief hit me and gave me a black eye and then ran off.
The thief seemed to break in through a window.
The thief outwitted the police and got away with his loot.
The thief got in without being noticed.
The thief ran away in the direction of the station.
The thief made off with the woman's handbag.